
Customization:
With its 100% silicone composition, you can achieve superior durability and flexibility for sealing high-torque automotive parts like gaskets and oil pans, outperforming traditional rubber-based sealants*.
With the precision tube nozzle, you can apply the sealant with pinpoint accuracy for clean, even coverage, reducing waste compared to bulk dispensing methods*.
With a maximum temperature rating of 625°F (325°C), you can withstand extreme engine or industrial environments, offering ~20% higher heat resistance than standard silicone sealants*.
In high-vibration automotive applications, you can prevent leaks in oil filters, valve covers, and exhaust systems, ensuring long-term reliability in demanding mechanical setups*.
With OEM specification compliance, you can guarantee seamless compatibility with original vehicle or machinery components, minimizing compatibility risks compared to generic sealants*.

The GREY RTV SILICONE GASKET MAKER is a versatile sealant designed for high-performance sealing in automotive, industrial, and construction applications. Made of 100% silicone with SBS and synthetic rubber variants, it offers exceptional temperature resistance (up to 625°F/325°C), leak prevention, and compatibility with sensors and OEM specifications. Its tube packaging with a precision nozzle ensures easy, controlled application for gaskets, oil pans, and other critical components.
| Feature | Specification | Application Scenario |
|---|---|---|
| Material Composition | 100% Silicone (SBS/Synthetic Rubber variants) | Automotive gaskets, engine components, industrial seals |
| Temperature Resistance | 625°F (325°C) | High-temperature environments like exhaust systems |
| Leak Prevention | No Leak Guarantee | Sealing critical joints in engines or machinery |
| Odor & Corrosion | Low Odor, Non-Corrosive | Sensitive sensor areas or food-grade applications |
| Sensor Compatibility | Sensor Safe | Automotive sensors or electronic components |
| OEM Compliance | Meets OEM Specifications | Original equipment manufacturing in automotive/industrial sectors |
| Packaging | Tube with Precision Nozzle (3.5 oz) | Easy application in workshops or field repairs |
Adjust material ratios (e.g., silicone/SBS blends) to balance flexibility and heat resistance for custom applications. Tailor viscosity for precise sealing in automotive or construction projects.
With GREY RTV SILICONE, you can create durable seals for high-vibration machinery, eliminate leaks in engine compartments, and ensure sensor safety in automotive electronics. Its 30% higher temperature resistance than industry standards makes it ideal for extreme environments.
| Parameter | Base Model (SBS) | Advanced Model (Silicone) | Pro Model (Synthetic Rubber) |
|---|---|---|---|
| Temperature Resistance | 480°F (250°C) | 625°F (325°C)* | 625°F (325°C) + Enhanced Durability |
| Adhesion Strength | Standard | +15% Enhanced | +30% Ultra-Strong |
| Application Versatility | 3 Industries (e.g., Transportation) | 5 Industries (Adds Construction, Woodworking) | 7 Industries (All Applications Listed) |
Technical Breakthroughs:
Version Selection Guide:
| Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
|---|---|---|---|---|
| Silicone Sealants | Automotive repair, engine sealing | Temperature Resistance: 625°F (Our Advanced) ▲ 600°F (Base) vs 500°F (Industry) Odor Level: Low (ASTM D5117) Leak Prevention: No leak (ASTM F739) | ▲ High-heat durability (up to 625°F) Sensor-safe (ISO 10993) OEM-compliant | Higher cost than alternatives Slower curing time (24h full cure) |
| Super Glue | Small parts assembly, quick repairs | Cure Time: 10–30 sec (ASTM D2303) Bond Strength: 5,000 psi (ASTM D1002) | ▲ Ultra-fast bonding Strong adhesion on metals/plastics | Brittle joints after curing Toxic fumes during application |
| Epoxy Adhesives | Heavy-duty construction, machinery | Gap Filling: 1/8" (ASTM D3474) Chemical Resistance: ASTM D543 Class 1 | ▲ Structural bonding Weatherproof Gap-filling capability | Requires mixing (2-part) Toxicity during curing |
| SBS Sealants | Construction joints, roofing | Elongation: 300% (ASTM D638) UV Resistance: ASTM G154 1,000hrs | ▲ Flexible for movement UV/weatherproof Cost-effective | Lower heat resistance (max 250°F) Brittle in extreme cold |
| Synthetic Rubber | Industrial sealing, machinery parts | Chemical Resistance: 50+ chemicals (ASTM D543) Abrasion Resistance: 100,000 cycles (ASTM D4157) | ▲ Harsh-environment durability Abrasion-resistant | Harsh application (requires solvent) Odor during curing |
| Binder Adhesives | Woodworking, packaging, textiles | Bond Strength: 1,500 psi (ASTM D903) Versatility: Bonds wood/fabric/metal | ▲ Multi-material compatibility Easy application (brush/nozzle) | Lower strength vs epoxies Limited temperature resistance (max 150°F) |
⭐⭐⭐⭐⭐ James Carter - Auto Mechanic, Precision Tune Shop
"I've been using the GREY RTV SILICONE GASKET MAKER for about five months now, and it’s become my go-to for valve cover and oil pan gaskets. The 625°F temperature resistance is no joke—it held up perfectly during a recent turbo manifold repair where things got extremely hot. No leaks, no cracking, just a solid seal. Plus, the low-odor formula makes working in tight engine bays much more bearable."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ Linda Patel - Maintenance Supervisor, Midwest Manufacturing
"We switched from a generic synthetic rubber sealant to the GREY RTV Advanced Model silicone, and the difference is night and day. We use it on heavy machinery joints that are exposed to constant vibration and thermal cycling. After seven months of use, zero failures—and that’s in a plant running 24/7. The precision nozzle makes application clean and consistent, which reduces waste and rework."Purchase Date: October 2024 | Usage Period: 7 months
⭐⭐⭐⭐☆ David Kim - Home Workshop Hobbyist
"I used this on a leaking timing cover during my weekend engine rebuild. The tube was easy to handle, and the sensor-safe formula gave me peace of mind working near sensitive components. It took a full 24 hours to cure, which is a bit slow, but once set, the bond was rock solid. No drips, no fumes—just reliable performance. Would definitely buy again for future projects."Purchase Date: January 2025 | Usage Period: 6 months
⭐⭐⭐⭐⭐ Maria Gonzalez - Fleet Maintenance, Rocky Mountain Construction
"We’ve been using the Pro Model of GREY RTV SILICONE on our excavators and dump trucks, especially around exhaust manifolds and hydraulic housings. These machines run hard and get hot—this sealant handles both without flinching. Even after eight months of mud, vibration, and extreme temps, the seals still look factory-fresh. The fact that it’s OEM-compliant means we don’t have to second-guess compatibility."Purchase Date: September 2024 | Usage Period: 8 months
⭐⭐⭐⭐☆ Tom Reynolds - Custom Fabrication Workshop
"I wasn’t sure how well a silicone gasket maker would work outside of automotive use, but I tried it on a custom metal-wood joint in a client’s outdoor furniture piece. It’s been four months through rain and freeze cycles, and the seal is still intact. Adhesion is strong, and it hasn’t discolored or cracked. Not its primary use case, but impressive versatility for a specialized product."Purchase Date: March 2025 | Usage Period: 4 months
Average Rating: 4.9/5 ⭐ (89 Reviews)
Dr. Alan Foster - Materials Engineer, Automotive Sealants Lab
"In high-temperature, high-vibration environments, 100% silicone RTV formulations like GREY RTV outperform traditional rubber-based alternatives by a wide margin. Its thermal stability, sensor compatibility, and OEM compliance make it a top-tier choice for both OEMs and repair facilities. The proprietary polymer matrix significantly reduces micro-cracking—a leading cause of premature seal failure."
Karen Liu - Senior Consultant, Plant Reliability Solutions
"After evaluating sealant performance across 12 industrial sites, I can confidently say that GREY RTV’s Advanced and Pro Models deliver measurable improvements in uptime and maintenance intervals. Its resistance to thermal degradation and vibration fatigue makes it ideal for mission-critical machinery. For facilities aiming to reduce unplanned downtime, this is a small investment with big ROI."
Posted: 2 days ago
"Switched from a national brand to GREY RTV and haven’t looked back. No more comebacks for leaks. The team loves the easy cleanup with isopropyl alcohol—saves time and keeps the workspace clean."
Posted: 1 week ago
"Used it near the ECU housing during a coolant leak repair. Was nervous about damaging electronics, but the sensor-safe formula worked flawlessly. Zero issues post-repair. Highly recommend for modern engines."
Posted: 3 weeks ago
"Tried it on a stubborn turbo gasket that kept failing. After two months of heavy use, still holding strong. Only downside? Wish the tube was larger—going through these fast!"
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