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| SKU | vby5867 |
| GTIN | 0686226818782 |
| Brand | Permatex |
| Product Name | Ultra Copper Maximum Temperature RTV Silicone Gasket Maker |
| Part Number | 81878-12PK |
| Color | Copper |
| Item Form | Paste |
| Material | Copper-infused Silicone |
| Size | 3 oz. (89 ml) Tube (Pack of 12) |
| Weight | 2.88 lbs (1.31 kg) for the 12-pack |
| Dimensions (Pack of 12) | 8.4" W x 8.9" L x 4.3" H (21.3 cm x 22.6 cm x 10.9 cm) |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
This item:
Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 3 oz (89ml) Tube | High Heat Sealant for Engines
18,719
This item
Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 3 oz (89ml) Tube | High Heat Sealant for Engines
18,719
Total price:
29,406
You save 13,327 (31%) Extra3 items selected
3 items
29,406You save 13,327 (31%) Extra
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Seal Your Engine Against Extreme Heat & Fluids
Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker is the most advanced, high temp RTV silicone gasket available in India through CrowCrowCrow. It offers three times more oil resistance than conventional silicones and eight times more flexibility than cut gaskets, ensuring a superior, durable seal for demanding automotive applications. This sensor-safe, low-odor, and non-corrosive formula provides superior adhesion, making it ideal for high-performance engines and OEM specified applications.
Engineered for extreme conditions, this gasket maker withstands intermittent temperatures from -75°F to 700°F (-62°C to 371°C). It effectively resists auto and shop fluids, as well as vibration, maintaining seal integrity under stress. The advanced formulation provides significant performance advantages, excellent torque retention, and high-temperature, sensor-safe properties crucial for modern engine components like aluminum and bi-metal alloys.
For Indian mechanics, this imported gasket maker offers a reliable solution for exhaust manifolds, valve covers, oil pans, timing covers, water pumps, and thermostat housings. Ensure your engine runs smoothly with a seal designed for the toughest conditions. All customs duties and GST are included in the price, with ExpressBox tracked delivery to your pincode.
Engineered for Extreme Heat and Pressure
Permatex Ultra Copper RTV Silicone Gasket Maker is formulated for the most demanding automotive applications. Its advanced high-temperature resistance, up to 700°F intermittent, makes it perfect for turbo-charged engines, exhaust manifolds, and high-performance vehicles. Unlike standard silicones, it offers three times the oil resistance and eight times the flexibility, ensuring a leak-proof seal that withstands extreme engine bay conditions. This sensor-safe, non-corrosive formula protects sensitive engine components. Imported directly from authorized US retailers, it guarantees authenticity and superior performance for your vehicle's critical sealing needs.
Ideal for High-Performance Engines, Not for General Home Use
This gasket maker is specifically designed for automotive engine applications requiring extreme temperature and fluid resistance. It is perfect for mechanics working on high-performance engines, turbochargers, exhaust systems, and sensitive sensor areas. Avoid using this product for general household sealing tasks like bathroom caulking or window glazing, as its specialized formulation is optimized for engine environments. For simpler home repairs, consider a general-purpose silicone sealant.
Typical situations where Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 3 oz (89ml) Tube | High Heat Sealant for Engines helps — illustrative scenarios, not customer reviews.
Mechanic in Chennai needing to seal a high-performance engine's oil pan and valve covers.
Permatex Ultra Copper RTV provides superior oil resistance and flexibility, ensuring a leak-proof seal even with engine vibrations and heat. Its 700°F intermittent rating handles the demanding conditions of Indian summer heat and heavy traffic.
Car enthusiast in Delhi performing exhaust manifold gasket replacement on a modified vehicle.
The extreme 700°F intermittent temperature resistance of this gasket maker is crucial for exhaust applications. Its superior adhesion and fluid resistance prevent leaks and ensure long-term durability under high-heat exhaust conditions.
| Key Active Ingredient | Silicone Polymer |
| Temperature Range | -75°F to 700°F (-62°C to 371°C) intermittent |
| Oil Resistance | 3x conventional silicones |
| Flexibility | 8x more flexible than cut gaskets |
| Cure Type | Room Temperature Vulcanizing (RTV), Neutral Cure (Sensor-Safe) |
| Allergens / Irritants | May cause skin irritation. Contains lead (California Prop 65 warning). |
| Suggested Applications | Exhaust manifolds/headers, valve covers, oil pans, timing covers, water pumps, thermostat housings |
| Application Temperature | 5°C to 40°C (41°F to 104°F) |
| Cure Time | 1 hour to tack-free, 24 hours for full cure |
| Shelf Life After Opening | 12 months (typical for RTV silicone) |
| Cost per use | 3 oz (89 ml) tube at ~1g/application = ~89 applications: ₹210 per application |
| Contraindications |
| Feature | Permatex Ultra Copper | Others |
|---|---|---|
| Max Temperature Resistance | 700°F (371°C) intermittent | Typically 300-500°F (150-260°C) intermittent for standard automotive RTVs |
| Oil Resistance | 3x more resistant than conventional silicones | Standard automotive RTVs offer moderate oil resistance |
| Flexibility | 8x more flexible than cut gaskets | Standard RTVs offer moderate flexibility; can become brittle over time |
| Sensor Safety | Sensor-safe, low odor, non-corrosive | Many local RTVs are acetoxy cure (vinegar smell) and can be corrosive to sensors |
| Cost per 3 oz (89 ml) tube | ₹210 per ml | ₹300 - ₹700 per 85ml tube (varies by brand and retailer) |
About Permatex
Permatex is a leading manufacturer of automotive gasket makers and sealants, known for high-performance solutions engineered for extreme engine conditions and fluid resistance.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
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| Attributes | Current |  |  |  |  |  | |
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price |
| Not recommended for fuel system gaskets or parts in direct contact with gasoline. Avoid use on painted surfaces without proper preparation. |
6,724 9,076 |
3,963 6,349 |
2,170 3,331 |
6,272 7,996 |
4,067 5,829 |
5,254 7,462 |
| Rating | 4.80(29) | 4.60(633) | 4.60(633) | 4.80(3,419) | 4.50(340) | 4.70(28K+) | 4.63(8) |
| Brand Name | Permatex | Permatex | Permatex | Permatex | Eagle Abrasives | ACCUSHARP | Weller |
| Item Form | Paste | N/A | N/A | N/A | N/A | N/A | N/A |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
