KINGDELI High Temp RTV Silicone Sealant — Reliable High-Heat Sealant

KINGDELI High Temp RTV Silicone Sealant is a neutral-cure, high-temperature sealant that withstands continuous heat up to 300°C. It offers strong adhesion to metals, glass and ceramics, low VOCs, and OEM support from a trusted ISO-certified manufacturer.
Product Information

KINGDELI High Temp RTV Silicone Sealant — Professional High-Heat Sealing

KINGDELI High Temp RTV Silicone Sealant is engineered for demanding high-temperature applications where long-term reliability matters. This neutral-cure, non-corrosive silicone provides stable performance in continuous heat up to 300°C and intermittent peaks to 350°C, making it ideal for industrial, automotive, HVAC, and oven equipment.

Key Features and Benefits

  • High temperature resistance: Continuous service to 300°C, intermittent peak resistance up to 350°C.
  • Neutral cure, non-corrosive: Safe for use on sensitive metals and electronics without acid by-products.
  • Excellent adhesion: Bonds to metal, stainless steel, aluminum, glass, ceramics and many painted surfaces.
  • Durable and flexible: Resists vibration, thermal cycling and weathering while maintaining a flexible seal.
  • Fast handling: Skin formation in about 10–20 minutes; full cure in 24 hours (varies with bead size and conditions).
  • Low VOC & OEM-ready: Sustainable formulation and custom OEM/ODM support from KINGDELI.

Typical Applications

Use KINGDELI High Temp RTV Silicone Sealant for exhaust and manifold sealing, furnace and oven door seals, kiln and ceramic equipment, HVAC flanges, boiler repairs, industrial furnace maintenance, and electronic assemblies requiring thermal stability and insulation.

Why Choose KINGDELI

Since 1998, KINGDELI has combined manufacturing scale with technical expertise. Our 66,000 m², fully automated facility produces over 100,000 tons annually. As a National High-Tech Enterprise and contributor to GB/T 29755-2013, our products meet ISO 9001, ISO 14001, CE and ASTM standards. We provide professional technical support, low-VOC options, and trusted reliability across 50+ countries.

How to Use

Ensure surfaces are clean and dry. Cut nozzle to desired bead size, apply sealant, tool within 5–10 minutes for a neat finish, and allow full cure. Cure time depends on joint size and ambient conditions.

For detailed technical data sheets, safety information, OEM/ODM inquiries, or sample requests, contact KINGDELI technical support—trusted expertise and consistent supply for your high-temperature sealing needs.

Certifications

  • VOC

    VOC

  • ISO-2023-2026-EN

    ISO-2023-2026-EN

  • CE

    CE

Frequently Asked Questions

Can parts sealed with HY939 be disassembled later?

Yes. The cured sealant allows for relatively easy disassembly during maintenance without damaging mating surfaces.

Is HY-966 suitable for flooring applications?

Yes. It is suitable for wooden flooring, paneling, and structural flooring panels when used according to application guidelines.

How long is the shelf life?

HY-966 has a shelf life of 18 months when stored unopened under proper conditions.

How should the product be stored?

Store HY982 in its original, tightly sealed bucket in a cool, dry place below 25°C, away from direct sunlight and frost.

Get in Touch
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Foshan KINGDELI Viscose Co., Ltd.
No. 28, Mingfu Road, Mingcheng, Gaoming, Foshan, Guangdong, China.
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