I look after sourcing High Temperature sealing grease for demanding industrial settings, and I know what B2B buyers look for. Our product delivers dependable lubrication under extreme heat, resisting oxidation and water ingress while protecting stainless steel and rubber seals. I offer consistent supply for Wholesale orders and for Manufacturers who need reliable sealing solutions across equipment, from food processing to petrochemical plants. The grease stays pliable, reduces friction, and prevents sticking at temperatures up to high levels, preventing leaks and downtime. We test every batch for consistency, provide certificates, and ship quickly in bulk packaging. Our formulation is compatible with many seal materials and can be used in compressors, gearboxes, valves, and bearings. If you want to minimize maintenance and extend life of your seals, this High Temperature sealing grease is for you. Contact me to discuss bulk pricing and lead times.
High-temperature sealing grease engineered for extreme service delivers dependable sealing, reduced leakage and extended component life across engines, turbines, furnaces and industrial valves. With exceptional thermal stability, oxidation and chemical resistance, and low volatility at elevated temperatures, it minimizes maintenance cycles and unplanned downtime while maintaining seal integrity under thermal cycling and heavy load conditions. Beyond supplying product, we act as a partner in performance: offering tailored formulations, joint testing and application engineering to match operating profiles, streamlined global logistics and quality controls that meet industry standards. By focusing on total cost of ownership, responsive technical support and continuous improvement, we help procurement and maintenance teams stay ahead of the curve and keep critical assets running reliably.
| Grease Type / Grade | Max Continuous Temp (°C) | Thickener | Base Fluid | NLGI Consistency | Typical Applications | Estimated Service Life (hours at 200°C) | Thermal Conductivity (W/m·K) | Viscosity @40°C (mm²/s) | Color |
|---|---|---|---|---|---|---|---|---|---|
| Silicone oil + fumed silica high-temp grease | 250 | Fumed silica | Polydimethylsiloxane (silicone) | 2 | Oven door seals, electric motor shaft seals, high-temp bearings (moderate load) | 1,000 - 2,500 | 0.22 | 350 | Translucent gray |
| Perfluoropolyether (PFPE) with silica thickener | 260 | Fumed silica | Perfluoropolyether (PFPE) | 1.5 | Food-processing ovens, chemical-resistant high-temp seals, vacuum systems | 2,000 - 5,000 | 0.18 | 80 | Off-white |
| PTFE-reinforced silicone sealing paste (high-temp paste) | 320 | PTFE filler (paste) | High-viscosity silicone/heat-stable carriers | 0.5 (paste) | Flange/gasket sealing, furnace door and kiln joint sealing (static, high temp) | 3,000 - 8,000 | 0.15 | 150 | Light gray |
| Molybdenum disulfide (MoS2) polyurea grease | 200 | Polyurea | PAO / synthetic hydrocarbon | 2 | High-load journal bearings, sliding seals, slow-speed shaft seals | 800 - 1,800 | 0.25 | 300 | Dark gray/black |
| Calcium sulfonate complex (high thermal stability) | 220 | Calcium sulfonate complex | Synthetic oil (PAO blend) | 2 | Severe-environment seals, wet/high-pressure joint sealing at elevated temp | 1,200 - 3,000 | 0.28 | 420 | Tan |
| Ceramic-filled inorganic sealing paste (for extreme temp static seals) | 400 | Inorganic/ceramic binder (paste) | High-temp inorganic carriers / ceramic matrix | 0.0 (paste) | Furnace flanges, kiln repairs, high-temp duct and exhaust seals (static) | 5,000+ | 0.60 | 1,000 (paste consistency) | Beige |