Permatex 66C Clear Adhesive Sealant Rtv Silicon 80855 11Oz
RTV silicone gasket maker for flanges and covers where a formed-in-place seal is wanted instead of a cut gasket. Permatex and Versachem RTV silicone gasket makers — Ultra Black and Ultra Blue, Versachem Mega Copper and Mega Gray, high-temperature red and general-purpose clear — plus Aviation Form-A-Gasket #3 and Copper Spray-A-Gasket. The colour is the specification, not the decoration.
Published price
Permatex 66C Clear Adhesive Sealant Rtv Silicon 80855 11Oz
Quoted on the day
This one is priced against your specification rather than published. Send us what you need and we will come back with a figure.
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Prices exclude 5% VAT and are subject to change. Bulk discounts available.
Manufacturer’s datasheet (PDF)Safety data sheet (PDF)Delivered across all 7 Emirates. How delivery works
This size
RTV silicone gasket maker for flanges and covers where a formed-in-place seal is wanted instead of a cut gasket.
What this is
Forms a gasket in place between two mating faces, curing from a paste into rubber. Used on: sumps, valve covers, water pumps, timing covers, manifolds.
Brand: Permatex
- Size
- 11 oz
Worth knowing. “Sensor safe” matters more than it sounds. An ordinary acetoxy silicone gives off acetic acid as it cures, which attacks oxygen sensors — on a modern engine use a sensor-safe RTV or you may cure a leak and buy a sensor. On this shelf the 66C general-purpose clear adhesive sealant is the one that is not sold as sensor safe, and it is the one the warning is about.
Taken from the product’s own name, converted where the unit differs, and from the standard where the range cites one. Tell us the application and we will confirm the exact item before you order.
Specification
- What it is
- Room-temperature-vulcanising silicones and sealing compounds that form a gasket in place between two mating faces, curing from a paste into rubber, plus the non-hardening compounds used alongside a conventional gasket.
- Who buys it
- Plant and facilities maintenance, generator and pump servicing, engine rebuilders and fleet workshops holding their own consumables.
- Made of
- Silicone chemistry, with the cure system and the filler varying by grade. The datasheet is the authority, not the shelf label.
- How it works
- An RTV silicone cures on contact with moisture in the air, so it skins over in minutes and takes hours to cure through. Form-A-Gasket and Spray-A-Gasket are different animals — they stay tacky and non-hardening and are used WITH a gasket, not instead of one.
- Choosing the colour
- Ultra Black is flexible with maximum oil resistance and is sensor safe — the default where the joint sees engine oil. Ultra Blue is the multi-purpose one, sensor safe, for general gasketing where neither extreme heat nor constant oil is the problem. Versachem Mega Gray is sensor safe and rated −65 °F to 450 °F continuous, 650 °F intermittent. Versachem Mega Copper is the high-temperature one, resisting up to 700 °F, for exhaust and turbo work; its maker describes it as low-volatile and suitable for vehicles with oxygen sensors, which is not the same phrase as sensor safe, so ask if your engine is sensitive. Permatex high-temperature red runs −65 °F to 650 °F. The general-purpose clear RTV is for non-structural sealing where appearance matters and heat does not — see the warning below before putting it near a sensor.
- Where it is the wrong choice
- Check "sensor safe" before anything else on a modern engine. An ordinary acetoxy silicone gives off acetic acid as it cures, which attacks oxygen sensors — cure a leak with the wrong tube and you may buy a sensor. Ultra Black, Ultra Blue, Mega Gray and the high-temperature red are sold as sensor safe. The 66C general-purpose clear adhesive sealant on this shelf is NOT, and it is the one the warning is about — keep it away from sensors and away from anything above 400 °F. And check the temperature rating before using any of them near an exhaust or a turbo.
- Brands
- Permatex and Versachem.
- Genuine stock
- Genuine Permatex and Versachem stock, held at our own warehouse rather than drop-shipped. What you order is what is on the shelf, and batch and shelf life are confirmed on request.
- Storage
- Cool and out of the sun. A UAE store room in August will take months off the shelf life of anything on this list.
- Delivery
- All 7 Emirates from our own yard. Sharjah and the northern emirates are usually same day on stocked lines; the rest of the country is one to three working days.
- Trade and volume
- Volume pricing above trade quantities for workshops, fleets, facilities contractors and car wash operators. Send the whole list rather than one line and we will price the package instead of the item.
Not the right size?
Every option in the Gasket Makers & RTV Silicone range. Tell us the quantity and all of them are quoted together.
- Permatex Aviation Form A Gasket# 3 16Oz
- Versachem Super Clear Type 7 Sgm 73009
- Versachem Vc Mega Copper Silicone 3Oz 88839
- Versachem Vc Mega Gray Silicone 3 Oz 99939
- Permatex Px 101Ma Copper Spray-A-Gasket 9Oz Ae
- Permatex Indian Hd Gst Slc Cd 2Oz Bl
- PERMATEX PC-26C H/T RED RTV SILICONE 11oz CQ
- PERMATEX Red RTV SILICONE
- Permatex Ultra Blue Gasket Maker Multi Purpose, 3 Oz
- Permatex Clear RTV Silicone
- Permatex Pc-26c H/T Red RTV Silicone 12x11oz Cq
- Permatex Ultra Black RTV Silicone Gasket Maker, 3 oz 82180
Permatex 66C Clear Adhesive Sealant Rtv Silicon 80855 11Oz — questions we get asked
Anything not covered here, ask on WhatsApp — you will get a person, not a form reply.