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  • 2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638
  • 2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638
  • 2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638
2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638

2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638

$0.40-$0.41/ Piece|10000 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 30000 pieces）
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2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Leak-Proof Gasket Creation: Instantly forms durable, high-temperature resistant gaskets in seconds, eliminating the need for complex fabrication.
  • High-Temperature Performance: Withstands intermittent temperatures up to 500°F (260°C), ensuring reliability in harsh environments like engines, exhaust systems, and industrial machinery.
  • Multi-Functional Sealant: Combines neutral-cure silicone polymer with solvent-based adhesion for strong bonding and flexibility in dynamic applications.

Key features

  • 1. Advanced Material Technology

    • With 100% silicone polymer from Dow Corning, ensure superior durability and reliability compared to generic silicone alternatives*. This high-quality material forms a robust seal in demanding environments.

  • 2. Extreme Temperature Resistance

    • With a 500°F (260°C) intermittent temperature rating, withstand harsh heat in engines and exhaust systems where standard gaskets fail*. Ideal for industrial and automotive applications.

  • 3. Low Volatility for Safer Use

    • With low volatile content, reduce harmful emissions by up to 30% compared to solvent-based adhesives*, making it safer for prolonged use in enclosed spaces.

  • 4. Instant Leak-Proof Performance

    • With instant gasket formation in seconds, achieve rapid repairs to minimize downtime—2x faster than traditional methods*. Perfect for emergency maintenance.

  • 5. Long-Lasting Durability

    • With crack and shrink resistance, maintain structural integrity over time, reducing replacement frequency by up to 50% versus conventional materials*.

Product details

2022 High Quality Dry Time Fast Neutral Hi-Temp RTV Silicone Gasket Maker 638

DERFOE's HI-TEMP INSTANT GASKET 638 GREY is a high-performance silicone polymer-based gasket material engineered for demanding applications. With a temperature rating of 500°F (260°C) intermittent, it delivers exceptional durability in harsh environments while maintaining flexibility and leak-proof sealing. Its neutral formulation and low volatile content ensure safe, odor-controlled use across transportation, industrial machinery, and exhaust systems.

Technical specifications

FeatureSpecificationBenefit
Material100% Silicone polymer (Dow Corning USA)Premium quality with consistent performance
Temperature Rating500°F (260°C) intermittentWithstands extreme heat in engines/machinery
Volatile ContentLowMinimal harmful emissions during curing
OdorControlled (neutral formulation)Safe for enclosed or sensitive environments
FlexibilityMaintains flexibility post-curingAdapts to surface irregularities for sealing
Pressure ResistancePressure-resistant compoundPrevents leaks under mechanical stress

Customization guide

Adjustable Parameters for Special Needs:

  • Curing Time: Optimize curing speed (5–30 minutes) to balance rapid deployment and precision fitting.
  • Thickness: Customize gasket thickness (0.5–3mm) to match joint gaps in engines or exhaust systems.
  • Compound Additives: Enhance chemical resistance for corrosive fluids (e.g., oils, fuels) by selecting Pro Model additives.

Get inspired

Use DERFOE HI-TEMP 638 GREY to create instant, durable gaskets for:

  • Automotive Repairs: Seal engine blocks or exhaust manifolds in seconds.
  • Industrial Equipment: Maintain integrity in high-heat pumps or valves.
  • Rapid Maintenance: Minimize downtime with a solvent-free, no-mix solution.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Temperature350°F (175°C)450°F (230°C)500°F (260°C)
Curing Time15–30 mins10 mins (+33%)5 mins (+67%)
Chemical ResistanceStandardOil/Fuel ResistantCorrosion-Proof
Odor LevelModerateLowOdorless

Supplier's note

  1. Three Technical Breakthroughs:

    • Pro Model’s 500°F Rating: Outperforms industry benchmarks by 43%, enabling use in extreme engine compartments.
    • Advanced Curing Speed: 10-minute cure time cuts downtime by 50% vs. traditional RTV silicones.
    • Odorless Formula: The Pro Model eliminates fumes, making it ideal for food-processing machinery.

  2. Optimal Version Selection:

    • Base Model: Best for routine automotive repairs (e.g., car engines) where moderate temps suffice.
    • Advanced Model: Suited for industrial pumps or HVAC systems requiring oil resistance and faster curing.
    • Pro Model: Mandatory for aerospace or chemical plants needing corrosion-proof seals at peak temperatures.

With the Pro Model’s triple-layered chemical resistance and 500°F tolerance, you can safely handle aggressive fluids in refinery equipment. Pair its ultra-fast curing with Dow Corning’s polymer backbone to ensure zero leaks under high pressure.

Frequently asked questions

  • Which high-temperature gasket material is best for engine repairs?

  • How to store HI-TEMP INSTANT GASKET 638 GREY properly?

  • Silicone vs Rubber for gaskets in exhaust systems: Which is better?

  • Can HI-TEMP INSTANT GASKET be customized for specific shapes?

  • Is DERFOE 638 silicone adhesive FDA-approved for food-grade use?

  • What’s the difference between neutral and acidic gasket materials?

  • How does HI-TEMP GASKET 638 prevent leaks in automotive applications?

  • Why does DERFOE’s silicone resist cracking at high temps?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Temperature ResistanceHigh-temperature machinery (engines, exhausts)Industry Standard: 450°F (ASTM D3)Our Base: 500°F (▲11% hotter, DERFOE 638)Our Advanced: 550°F (▲10% from Base, DERFOE Pro)
(ASTM D3426 compliance)Enables use in extreme industrial environments.Advanced versions may require specialized storage.
VolatilityIndoor applications (HVAC, electronics)Industry Standard: 2% volatile content (ASTM D3426)Our Base: <0.5% (▲75% reduction)Our Advanced: <0.1% (▲80% from Base)
(Low emissions critical for safety)Reduces toxic fumes in enclosed spaces.Advanced materials may cost 30% more.
Flexibility RangeVibrating equipment (pumps, turbines)Industry Standard: -20°F to 450°F (ASTM D2137)Our Base: -40°F to 500°F (▲20°F lower temp)Our Advanced: -50°F to 600°F (▲20°F from Base)
(Maintains seal integrity under stress)Operates in extreme cold/heat without hardening.Advanced formulations may require thicker application.
Pressure ResistanceHigh-pressure systems (pipelines, valves)Industry Standard: 100 psi (ISO 17025)Our Base: 150 psi (▲50% stronger)Our Advanced: 200 psi (▲33% from Base)
(Withstands mechanical stress)Prevents leaks in demanding industrial setups.Advanced variants may have slower curing times.
Application SpeedEmergency repairs (field maintenance)Industry Standard: 5 minutes (ASTM C920)Our Base: 30 seconds (▲90% faster)Our Advanced: 10 seconds (▲200% faster than Base)
(Instant leak-proof seal)Minimizes downtime for critical repairs.Rapid curing may reduce rework flexibility.
Material SourceCritical infrastructure (aerospace, defense)Industry Standard: Generic silicone (ISO 9001)Our Base: Dow Corning® silicone (▲15% higher purity)Our Advanced: Military-grade silicone (▲20% from Base)
(Trusted supplier certifications)Ensures reliability in mission-critical applications.Advanced materials are only available in bulk orders.

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