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Extreme Heat & Oil Resistance for High-Performance Engines
Permatex Ultra Copper RTV Silicone Gasket Maker is engineered for demanding applications in 4-cylinder, turbocharged, or high-performance engines. This USA-imported formula provides the most advanced high-temperature gasket solution, offering sensor-safe, low-odor, and non-corrosive properties with superior adhesion. It is three times more oil resistant than conventional silicones and eight times more flexible than traditional cut gaskets, ensuring a reliable seal under extreme conditions. All customs duties and GST are pre-paid, with delivery via ExpressBox tracked service.
This gasket maker withstands a temperature range of -75°F to 700°F (-59°C to 371°C) intermittently. It effectively resists common auto and shop fluids, including engine oil, coolant, and fuel, as well as vibration. Its flexibility prevents cracking and shrinking, maintaining seal integrity over time. Reviewers highlight its effectiveness in high-heat areas like exhaust manifolds and its reliable performance in Indian driving conditions.
For Indian mechanics and enthusiasts, this USA-sourced gasket maker offers a premium sealing solution compared to standard local alternatives. Its advanced formulation ensures longevity and performance in hot Indian engine bays. The 3 oz. (85g) tube provides ample material for most gasket replacement tasks. Enjoy peace of mind with our 14-Day Smile Guarantee and secure payment options.
Unmatched Performance for Demanding Engines
Permatex Ultra Copper RTV Silicone Gasket Maker is engineered for the extreme conditions found in high-performance and turbocharged engines. Its advanced formula offers unparalleled heat resistance, exceeding 700°F intermittently, and superior resistance to engine oils and other automotive fluids. This ensures a robust, leak-free seal where standard gasket materials fail. Imported directly from authorized US retailers, it guarantees authenticity and quality for Indian automotive enthusiasts seeking the best for their vehicles. All customs duties and GST are included, providing a transparent landed price.
Who It's For vs. Who Should Skip It
This gasket maker is perfect for mechanics and car owners working on high-performance engines, turbochargers, exhaust systems, or any application requiring extreme heat and oil resistance. It's ideal for sealing valve covers, oil pans, timing covers, and water pumps in demanding automotive environments. Skip this product if you need a general-purpose sealant for low-temperature or non-automotive applications, or if you require a faster-curing, non-RTV adhesive. For basic household sealing, standard silicone sealants are more appropriate and cost-effective.
Typical situations where Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 85g (3 oz.) | High Heat Sealant for Engines helps — illustrative scenarios, not customer reviews.
High-performance engine build in hot Indian climate requiring extreme heat and oil resistance.
Permatex Ultra Copper RTV Silicone Gasket Maker withstands up to 700°F (371°C) intermittent and is 3x more oil resistant. It ensures a durable, leak-free seal for exhaust manifolds, valve covers, and oil pans, even under intense heat and vibration common in Indian traffic.
Replacing a worn gasket on a vehicle used for long drives or in heavy traffic, needing a flexible and reliable seal.
This gasket maker is 8x more flexible than cut gaskets, preventing cracks and maintaining seal integrity. Its superior adhesion ensures a long-lasting bond for components like water pumps and timing covers, reducing the need for frequent replacements in demanding Indian driving conditions.
| Cure Type | RTV (Room Temperature Vulcanizing) |
| Temperature Range | -75°F to 700°F (-59°C to 371°C) intermittent |
| Oil Resistance | 3x conventional silicones |
| Flexibility | 8x more flexible than cut gaskets |
| Adhesion | Superior |
| Odor | Low |
| Corrosiveness | Non-corrosive |
| Sensor Safe | Yes |
| Fluid Resistance | Resists auto and shop fluids |
| Suggested Applications | Exhaust manifolds/headers, valve covers, oil pans, timing covers, water pumps, thermostat housings |
| Application Temperature | Ideal for hot engine bay conditions |
| Cure Time | Refer to product packaging for full cure details; typically 24 hours for full strength |
| Cost per use | 85 g tube at ~1 g/application = ~85 applications: ₹26.35 per gram |
| Shelf life after opening | 12 months (category default for sealants) |
| Contraindications | Not for use on fuel system gaskets or parts in direct contact with gasoline; not for general household sealing. |
| Allergens / Common Irritants | May cause skin irritation. Contains chemicals known to the State of California to cause cancer and reproductive harm (lead, BPA). |
| Feature | Permatex Ultra Copper | Others |
|---|---|---|
| Max Temperature Resistance | 700°F (371°C) intermittent | Typically 300-500°F (150-260°C) intermittent; varies by brand |
| Oil Resistance | 3x conventional silicones | Standard oil resistance; prone to degradation with prolonged exposure |
| Flexibility | 8x more flexible than cut gaskets | Less flexible, can crack or shrink over time |
| Adhesion & Durability | Superior adhesion, long-lasting seal | Moderate adhesion, may require more frequent replacement |
| SKU | mvs7277 |
| GTIN | 00686226818782 |
| Brand | Permatex |
| Product Name | Ultra Copper Maximum Temperature RTV Silicone Gasket Maker |
| Color | Copper |
| Material | Silicone |
| Container Type | Tube |
| Net Weight | 85 g (3 oz) |
| Dimensions (Tube) | 19.9 cm (H) x 9.6 cm (W) x 4.6 cm (L) |
| Item Weight | 115 g |
| Part Number | 81878 |
| Model Number | 81878 |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
About Permatex
Permatex is a leading manufacturer of automotive gasket makers and sealants, trusted by professionals for high-performance engine sealing solutions.
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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This item:
Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 85g (3 oz.) | High Heat Sealant for Engines
2,240
This item
Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 85g (3 oz.) | High Heat Sealant for Engines
2,240
Total price:
12,990
You save 5,960 (31%) Extra3 items selected
3 items
12,990You save 5,960 (31%) Extra
| Attributes | Current |  |  |  |  |  | |
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 2,240 3,430 | 6,720 9,060 | 4,030 6,460 | 18,120 26,430 | 1,190 1,640 | 6,260 7,980 | 4,540 6,770 |
| Brand Name | Permatex | Permatex | Permatex | Permatex | Permatex | Eagle Abrasives | Threadmade |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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