Deoxit fadergrease. DeoxIT® FaderGrease – Moving Contact Lubricant for Conductive Plastic Faders and Controls. Formulation: 100% DeoxIT® Grease L260Cp. They were probably lubricated with separate products on the wiper and the shaft bushing. That's why we use deoxit 100. DeoxIT® Fader, #F100L-L2C (Squeeze Tube) DeoxIT® FaderGrease: DeoxIT® Grease L260, M260 & L27 Marine Grease: HAND-E-GLOVE®, HAND-E-SCRUB™ and HAND-E-CARE™ DeoxIT® AxeWipes - String Wipes: FLUX and TIP Tinner: DustALL™ Products: CLEANERS, Washes, Solvents & Protectants: CLEANERS - Screen, Equipment, Disc, Vinyl/LP: CaiKleen™ RBR DeoxIT® FaderGrease is a precision lubricating grease and for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). DFG-213-8G: 100% Grease, 8 grams DeoxIT® FaderGrease adalah sebuah pelumas grease presisi yang digunakan untuk permukaan kontak yang bergerak (fader, sakelar, potensiometer, dan mekanisme lain dengan permukaan geser). Ideal for OEMs or include in service kit. Well, it greatly improved the range of volume adjustment and after 24 hours the volume adjustment was full functioning. DeoxIT Gold G5 Contact Enhancer 5% Solution and F5 Fader Lubricant 5% Solution. Applications = 50 +/- drops, 0. No flushing Report an issue with this product. Formulation: 5% DeoxIT® Fader (active ingredient), 75% Solstice PF (carrier solvent), 20% propellant. Any cleaning will lower or remove that fluid, and so fader lube can help some. £2499 (£17. Greases protect against oxidation (galvanic corrosion) and are free of mineral acids, sulphurs, alkalis and other noxious components aggressive to metals. One of these items is dispatched sooner than the other. Applicator: Spray, provides flushing action, briefly flammable (until solvent evaporates within 2-3 minutes). Product Part Number (100% concentrate) D100L. 67 * / Liter) Apr 28, 2008 · DeoxIT FaderGrease DFG-213-8, Jar, Contact Cleaner/Lube/Protector for Conductive Plastics & Carbon Controls, 226 g, Pack of 1 Visit the CAIG LABORATORIES Store 4. Toll Free: 800-CAIG-123 (800-224-4123) Business Office Hours: 8:00 AM - 4:00 PM DFG-213-8 - DEOXIT FADERGREASE, PRECISION GREASE FOR CONDUCTIVE PLASTIC SURFACES AND MOVING CONTACT (METAL-TO-PLASTIC AND PLASTIC-TO-PLASTIC DeoxIT® OEM Mini-Brush Bottle. Feb 1, 2014 · If that does not get the click, the next step is a MINIMAL bit of DeoxIT, time to do its magic, and slowly and easily exercising the pot until the lube/cleaner does the job. DeoxIT® SM22/SM22D Grease- J. (faders, slide potentiometers, conductive membranes - mouse pads and. No flushing action. Sep 3, 2020 · Just apply and leave on for a few minutes, to overnight if oxidation is severe, then wipe off and apply the DeoxIT® Gold GxMD. Formulation: 5% DeoxIT® Fader (active ingredient), 75% odorless Sep 16, 2002 · Product Description. DeoxIT® L27 Marine Grease- K May 14, 2024 · CAIG LABORATORIES DFG-213-1 DEOXIT FADER GREASE 28 GRAM JAR. Metal and/or Plastic: Not sure if faders have plastic and/or metal components, we recommend using DeoxIT D-Series, Part No. CAIG Laboratories, Inc. Best Sellers Rank: #62,904 in Industrial & Scientific ( See Top 100 in Industrial & Scientific) #265 in Industrial DeoxIT® OEM Mini-Brush Bottle. 28 ounces. Slow dry. Manufactured in semi-solid form for use as a combination cleaning, deoxidizing, protecting and lubricating preparation. DeoxIT® Sampler Kit, K-2C. ••• DeoxIT ® FaderGrease, 8 grams syringe. DeoxIT® D Series- D. G100L DeoxIT® FaderGrease is a precision lubricating grease and for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). Phone (02) 8214 8965 to buy Hosa Technology DeoxIt Fader Lubricant with Needle Dropper (148ml). It is entirely possible that Studer Revox use something other than silver plated carbon composition controls, and Deoxit does not play well with these specific parts, but Jan 3, 2014 · Bring Old Systems Back to Life! 2 Pack of DeoxIT D5S6 Contact Treatment and F5S-H6 Fader Lube by Caig Laboratories. Includes: DeoxIT® D-Series, Brush Bottle (Part No. Show details. Free 2-year. F100LL25C. This restores the contact’s integrity and leaves a thin microscopic layer that protects the metal. Quantity *. DeoxIT® Fader F-Series - Data Sheets. €2499 (€175. DeoxIT® Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other similar components. G100L-16BX, 1. DeoxIT® Greases improve performance and reliability of electrical contacts and mechanical components that require precise lubrication. Date First Available ‏ : ‎ December 24, 2014. NOTE: this item must not ship by air. $ 37 . DeoxIT® D-Series - Contact/Connector Treatment, Deoxidizer, Rejuvenator & ProtectantPart No. 0 OZ/ 142g, 182ml 5%. Use: Solvent evaporates quickly, providing precise control, no dripping and overspray. $ 28. 11. General QuestionDeoxIT D5 versus DeoxIT Fader cleaner All questions Answered questions Unanswered questions Product/Industry Product Category- A. DeoxIT® Fader F-Series is a precision lubricant and cleaner for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). (NSN 6850-01-477-1562), Part No. : DFG-213-8G DFG-213-1 DFG-213-8 Rev. 95. Use when surfaces require thicker lubrication/protection than the DeoxIT Fader can supply. Step 9 is important and is also a MUST, you don't want any liquids causing shorts/etc. DeoxIT ® FaderGrease, 28 grams jar. Hosa F5SH6 CAIG DeoxIT Fader Lube Contact Cleaner Spray is specifically designed for use on conductive plastic and carbon compounds. Applicator: Syringe, provides 100% DeoxIT® FaderGrease for additional tactile feel on moving faders. 87 inches; 0. DeoxIT® FaderGrease, 100% Grease Part Nos. DeoxIT® FaderGrease is a precision lubricating grease and for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). Jul 30, 2020 · As above, Deoxit Fader Lube is the best thing to do, after using Deoxit cleaner. Deoxit Faderlube 100% Dropper 25ML Hosa-F100L-L25C-Fader Lubricant, Deoxit Needle Dropper DeoxIT Fader Lube is a precision lubricant designed for use on conductive plastic and carbon compound controls. 6 mL) DeoxIT ® L260Np Grease, Squeeze tube (Part No. DFG-213-8G:100% Grease, 8 grams Applicator: Syringe, provides 100% DeoxIT® FaderGrease for additional tactile feel on moving faders. Date First Available: November 19, 2003. 3. content: 2ml, 100% solution, squeeze tube. in and receive free shipping and guaranteed lowest price. DeoxIT® FaderGrease – Moving Contact Lubricant for Conductive Plastic Faders and Controls Part No. 5% solution. Available here is Deoxit Fader 28g jar from Caig Laboratories, Inc. DeoxIT dissolves the contamination and protects the surface. Notify me about deals. DeoxIT® Fader Lube F5 Spray - F-Series (142g) Precision lubricant for conductive plastics and carbon-based controls. Jan 11, 2012 · Generally he says if you use Deoxit D5 on pots, follow up with Faderlube to renew lubrication. Q: (18390) I own vacuum tube home audio preamplifiers. Apr 28, 2021 · The Hosa D5S6 DeoxIT is an essential accessory every musician must have! DeoxIT 5% Spray Contact Cleaner, 5 oz. Applicator: Squeeze Tube, provides no flushing action, applies 100% DeoxIT® Fader. com FREE DELIVERY possible on eligible purchases DeoxIT® FaderGrease was specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other mechanisms with sliding surfaces. DeoxIT® L260/L260D Grease- I. Applicator: Squeeze tube, retail package. manufacturer description: DeoxIT® Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other similar components. This is a must have for any carbon traces whether it be a slide or a pot. × Close This online shop is using cookies to give you the best shopping experience. 14. DeOxit D100S This is 100% deoxidation product with no solvent delivery chemical. Hosa D5S6 DeoxIT Contact Cleaner DeoxIT® is a fast-acting deoxidizing solution designed for use as a general treatment for connectors, contacts, and other metal surfaces. Use: When contact and connectors are easily accessible. DeoxIT® Shield- F. It replenishes lubrication lost on surfaces that have been cleaned with solvents or other DeoxIT® FaderGrease is a precision lubricating grease and for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). Fast Australian shipping. DeoxIT FaderGrease DFG-213-8G, 100% Grease Specifications . DeoxIT® Gold- E. L260-C1: Copper Particles, 28 grams. 30 days returns. Quick-Dry, Non-Drip Solvent. The faders feel a bit sticky, and don't really glide smooth. Clean the elctrical contact with pro gold, lube the non electrical contact surfaces with scuba grease (very small amount). • Removes dust, dirt, and drink spills from conductive plastic faders DeoxIT® Fader F-Series. It’s slower to evaporate, providing flushing action to remove surfaces dirt, grease and DeoxIT® FaderGrease was specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other mechanisms with sliding surfaces. Almost instantly dissolves oxidation and leaves you equipment clean and lubricated. Improve conductivity. /57 g). Available here is Deoxit Fader 8g syringe from a Caig Laboratories, Inc. Why is it Unique: Our technically advanced greases are formulated to last under the most demanding applications. Aug 11, 2022 · Buy Deoxit Fader GreaseDFG-213-8 226 Gram jar: All-Purpose Cleaners - Amazon. Submit a product image below! Submit your own product image! $19 . Use: When contact and connectors are easily access DeoxIT® OEM Mini-Brush Bottle. F5S-H6 Spray: Using Adjustable Low-Med-High Valve. 46 x 0. 12. More than a just any contact cleaner, Hosa DeoxIT chemically improves Jun 6, 2017 · Excellent DAMPING GREASE for Tactile Feel (Use DeoxIT FaderGrease) USES: Plastic-to-Plastic Parts, Plastic-to-Metal Parts, Carbon-Based Controls, Metal-to-Metal Parts: Faders, linear sliders, sliding and slow rotating metal parts, locks, bearings, potentiometers, membrane switches, mouse pointers, touch keypads, etc. Sep 9, 2021 · Deoxit has a fast acting oxide remover, which when combined with mechanical cleaning, breaks down the oxide and adds a layer of red oil to protect the contacts in the future. If surfaces look very clean, just apply the D25L, then leave on for 5 minutes, wipe and apply the DeoxIT® Gold GxMD. &bull, Cleans, protects, lubricates, and improves conductivity&bull, Removes dust, dirt, and drink spills from conductive plastic faders and switches&bull, Removes oil, grease, and acid . carbon-based faders, switches and other similar components. Ph: (858) 486-8388 DeoxIT® Gold G-Series: DeoxIT® Gold GxL: DeoxIT® Shield S-Series: DeoxIT® Fader F-Series: DeoxIT® FaderGrease: DeoxIT® Grease L260, M260 & L27 Marine Grease: HAND-E-GLOVE® and HAND-E-SCRUB™ DeoxIT® AxeWipes - String Wipes: FLUX and TIP Tinner: DustALL™ Products: CLEANERS, Washes, Solvents & Protectants: CLEANERS - Screen, Equipment By Terry Vermost from Fort Smith, AR on May 9, 2022. 67 May 18, 2023 · 2. DeoxIT® Fader F-Series – Moving Contact Lubricant for Conductive Plastic Faders and Controls. 5 oz for $5. The need for re DeoxIT D-Series contact treatment is a fast-acting solution that improves, protects, lubricates, improves conductivity on all metal connectors and contacts. DeoxIT® AXE-WIPES DeoxIT® D-Series. Hosa Tech Authorised Dealer. 60/100 g) +. Dust, dirt, drink spills and other contamination also degrade the components' lubricant. 99/kg) Total price: Add both to Cart. Description. This product is a precision lubricant for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). Apr 13, 2017 · DeoxIT® Gold OEM Mini-Brush Bottle. The green and black can does work really well on controls but has a downside- it collects dust more. 75/kg) +. Ph: (858) 486-8388 . Notes: Use when over spray is an issue. In Stock. DeoxIT FaderGrease was specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other mechanisms with sliding surfaces. DeoxIT ® FaderLube (formerly CaiLube) is a precision lubricant designed for use on conductive plastic and carbon compound controls. was specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other mechanisms with sliding surfaces. Formulation: 100% DeoxIT® Fader. This F5SH6 contact cleaner spray was designed for use as a general treatment for connectors, contacts, and other surfaces. Nov 19, 2003 · DeoxIT FaderGrease is a precision grease for conductive plastic surfaces and moving contact (metal-to-plastic and plastic-to-plastic) surfaces. 6 mL) DeoxIT ® Gold G-Series, Brush Bottle (Part No. In Stock! Add to Cart. S100L-16BX, 1. DeoxIT® Contact Cleaner 25ml Needle Dispenser. I save Deoxit/Faderlube for the main switches and Metal and/or Plastic: Not sure if faders have plastic and/or metal components, we recommend using DeoxIT D-Series, Part No. Good for more precise delivery of the deoxidation element and no residual liquid. Deoxit-Series: F-Series. DeoxIT® Fader Spray, 100%, 57 g Cleaningspray for Faders. You are here: Home / Portfolio / Mixed Fullwidth Portfolio / DeoxIT® Fader F-Series. More than a contact cleaner, DeoxIT chemically improves DeoxIT® FaderGrease – Moving Contact Lubricant for Conductive Plastic Faders and Controls Part No. Part No. Over time these components lose their original lubrication from wear and/or repeated cleaning. The need for re DeoxIT Fader Grease. Nov 19, 2003 · Professional advice led me to buy the DeoxIT® Fader Squeeze tube, 100% solution, 2 mL and squeeze into the tiny opening of the pot case with subsequent rotation of the pot knob. ASIN ‏ : ‎ B00REZMUF2. DeoxIT D5S-6 Spray, More Than A Contact Cleaner, 142g, Integrated Straw, Pack of 1. Suitable for airfreight: Yes. £2950. Apr 5, 2011 · I want to use it to restore the "glide" on my vintage Pioneer 12 band EQ (SG-9800). Another member correctly mentions Caig makes multiple products for various specialized applications, so best to use the most appropriate product for the job. Ph: (858) 486-8388 DeoxIT® Grease, L260 Series DeoxIT® Grease, M260 Series: A; GENERAL INFORMATION: (1-Poor, 5-Excellent) 1. DeoxIT® Greases improve performance We would like to show you a description here but the site won’t allow us. Caig P/N: F5S-H6. #3. HAND-E-SCRUB Pump Bottle. See More Details about "DeoxIT Fadergrease Grease 100 Grease Description DeoxIT® FaderGrease – Moving Contact Lubricant for Conductive Plastic Faders and Controls Part No. Use in areas that two contacts will not DeoxIT® Greases, L260 and M260. choose NON-hazardous variation of this product: F100L-L25C. There seems to be some thinking that the "glide" is influenced by the TOP of the fader, which is separate from the carbon contact at the bottom. 3/23/2023, (#SDS-E-DFG213_v41. Fader grease, for sliding faders: Food grade silicon grease, sold in scuba stores. F5 Fader lube is the best I have found for cleaning traces and leaving them lubricated at the same time. 2 4. authorized dealer. other mechanisms with sliding surfaces). Last edited: Aug 31, 2022. 6 mL) DeoxIT ® Shield S-Series, Brush Bottle (Part No. DeoxIT® Fader- G. Buy a bundle and save! DeoxIT D5 Contact Cleaner 5% Solution and F5 Fader Lubricant 5% Solution. Warranty. 60 Milliliter (€491. DFG-213-8G: 100% Grease, 8 grams. DeoxIT® FaderGrease. CAIG Rosin NO CLEAN Soldering Flux. DeoxIT® Sampler Kit, #K-2C. Brand: CAIG Laboratories. 6 out of 5 stars 2 ratings DeoxIT Fadergrease Grease 100 Grease 28 G. Used to lubricate faders on all audio mixers and treat oxidized fader components that are usually the cause of fader noise and audio leakage. Higher molecular weight greases are generally higher in viscosity as well, up to 1 million cP (centipoise) are available. Jun 6, 2011 · Flushing can strip the lubrication out, and lock the control SOLID. 2 out of 5 stars 47 ratings. Dec 24, 2014 · Package Dimensions ‏ : ‎ 6. Manufacturer : CAIG Laboratories, Inc. Buyer pays for return shipping. HAND-E-SCRUB Pump Oct 7, 2019 · Re: Lubricating Potentiometers / Faders / Variable Resistors. 6 4. This leaves them 100% clean and shiny. NEW Formula - improved tactile feel, signal quality and displaces moisture and contaminants. QuestionsProduct CategoryA. If there is a discolor-ation of the metal (visual signs of oxidation/corrosion) - it is considered severe. D100S-2 (100% DeoxIT spray). 4. 46 x 3. Apr 6, 2018 · This item: DeoxIT FaderGrease, 8g - DFG-213-8G by Deoxit. DeoxIT® General/Multiple- C. This item: CAIG DeoxIT Faderlube F5S-H6 Precision Fader Lubricant Spray. Lubricates and protects plastic to plastic and plastic to metal surfaces. 15. As for the rotary pots and sliders, the shafts are lubricated with a viscous fluid/jel, the same used for damping tonearm cuing mechanisms and cassette tape door opening mechs. Use: When contact and connectors are Aug 7, 2012 · DeoxIT® FaderGrease Grease 100% grease 28 g - DFG-213-1 . DeoxIT® AXE-WIPES CAIG Laboratories, Inc. Dec 21, 2015 · Get it now! DeoxIT Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other similar components. 12200 Thatcher Court Poway, CA 92064 USA. DeoxIT® L260Cp Grease. General Question- B. Particles: Copper – Use when you require particles (conductive) to assist in oxide and corrosion breakup and good lubrication. Features. Copper is conductive. 00. Number of reviews: 3. Sale price $32. F100S-L2, (2. Myself, I supplement Deoxit by using Puretronics Extra Strength on the boards and contacts. Flushing action. Clean and deoxidize electrical contact surfaces in cell phones and other electronics. DeoxIT D-Series contact treatment is a fast-acting deoxidizing solution that protects, lubricates and improves conductivity on all metal connectors and contacts. Shop for the CAIG DeoxIT FaderLube Lubricant 5 oz. Provides clearer audio, clearer video, and reliable data. Use DeoxIT® D-Series to dissolve contamination, improve the connection as well as lubri-cate and protect the surface. Formulation: 100% DeoxIT® FaderGrease. D100L-16BX, 1. DeoxIT FaderGrease - DeoxIT FaderGrease Grease 100% grease 28 g NEW Formula - improved tactile feel, signal quality and displaces moisture and contaminants. Great for moving contacts. Is often bought together Customers also bought Customers also viewed. CAIG DeoxIT Faderlube F5S-H6 Precision Fader Lubricant Spray. Provides extra lubrication. Nov 27, 2012 · I then soak them for a couple of hours (at least) with 100% Deoxit. Dust, dirt, drink spills and Jun 17, 2003 · Product Description. Feb 26, 2016 · Formulation: 5% DeoxIT® (active ingredient), 75% odorless mineral spirits (carrier solvent), 20% propellant. It replenishes lubrication lost on surfaces that have been cleaned with solvents or other cleaning solutions. DFG-213-8G: 100% Grease, 8 grams Applicator: Syringe, provides 100% DeoxIT® FaderGrease for additional tactile feel on moving faders. DeoxIT® Fader F-Series is a precision lubricant for moving contact surfaces (faders, switches, potentiometers and other mechanisms with sliding surfaces). General purpose cleaner, for all metal surfaces with severe oxidation and corrosion. Brand: CAIG Laboratories: Liquid volume: 0. DeoxIT® FaderGrease, 28g SKU: DFG-213-1 A precision grease for conductive plastic surfaces and moving contact surfaces (metal-to-plastic and plastic-to-plastic). D5S-6-LMH (D5S-6) (142 g / 182 ml): Original Low-Med-High A DeoxIT® D-Series - Data Sheets. • Rejuvenates, protects, lubricates, and improves conductivity. 13. DeoxIT7 Gold G-Series is speci cally formulated to improve conductivity, lubricate and protect gold, base metals and other precious metal surfaces. HAND-E-GLOVE® Pump Bottle. STEP 1 should be UNPLUG THE DEVICE from the power source (wall outlet/power strip/surge protector/etc) Whether for servicing or changing input/outputs/speaker wires. Special additives improve conductivity and prevent dissolved oxides from re-attaching, keeping them in suspension and allowing them to be easily dispersed by the mechanical action of the contact. Manufacturer ‏ : ‎ Caig Laboratories. It replenishes lubrication lost on surfaces that have been cleaned with solvents. L260-N2G, 2 grams DeoxIT®, FaderLube (formerly CaiLube) is a precision lubricant designed for use on conductive plastic and carbon compound controls. Add to cart. Use on connectors, switches and contacts for maximum performance and protection. It is also ideal for use on conductive membrane switches and components. Is ideal for applying on delicate connectors and components on and in equipment. DeoxIT® FaderGrease Products. DeoxIT® Fader F-Series (formerly CaiLube MCL) Precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and compound. If you can afford it, use Gold for preventive maintenance to slow subsequent corrosion. or other cleaning solutions. Its best for connectors and works well on tube and transistor sockets as it leaves no residue. HAND-E-SCRUB Pump Description. 98 $ 35 . DeoxIT® Gold OEM Mini-Brush Bottle. DeOxit DN5 – if you don’t need a flushing action this product delivers the deoxidiser via a fast evaporation solvent. €1799 (€2,248. About 1000 applications. DeoxIT® Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches, and other similar components. 04 ml/drop. content: 5. Formulation contains petroleum naphtha (odorless mineral spirits) solvent, and is briefly flammable (until solvent evaporates within 2-3 minutes). Dust, dirt, drink spills and other contamination also DeoxIT® Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other similar components. 12 Dec 28, 2018 · Jan 2, 2019. DeoxIT® FaderGrease was specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other mechanisms with sliding surfaces. Formulation: 100% DeoxIT® FaderGrease. 0 oz. 99. HAND-E-SCRUB Pump DeoxIT® Fader F-Series is a precision lubricant specifically formulated to improve conductivity and lubricate conductive plastic and carbon compound faders, switches and other similar components. CAIG DeoxIT Fader F5. Brand Name : DeoxIT FaderGrease DFG-213-8G (Syringe Applicator) DeoxIT® D-Series contact cleaner dissolves oxides and sulfides that form on metal surfaces. Then I use a thin strip of paper soaked in Deoxit to buff the contacts clean by reassembling one side of the switch with the paper between the fixed and movable contacts and draw the paper through the contacts a couple of times. Be the first to know about exclusive offers, tips and more. pdf) DeoxIT® Fader Spray, 5% , NON-FLAMMABLE Part Apr 18, 2021 · Deoxit is as about as powerful as you ever want to use in audio equipment! The red and black can is contact cleaner only. Over time these components lose theiroriginal lubrication from wear and/or repeated cleaning. Item model number ‏ : ‎ DFG-213-8G. tw ms ba vh rm mi oo ci cy xz