Operating temperatures for common valve packings and gaskets
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Operating temperatures of commonly used gaskets for valvesSerial number | Name | Operating temperature (°C)
1 | Natural rubber | -50～90
2 | Neoprene | -40～100
3 | Nitrile rubber | -30～110
4 | Styrene-butadiene rubber | -30～100
5 | EPDM | -40～130
6 | Fluororubber | -50～200
7 | Asbestos rubber sheet | ≤300
8 | Synthetic fiber rubber | -40～200
9 | Polytetrafluoroethylene | ≤200
10 | Low-carbon steel + flexible graphite composite gasket | ≤450
11 | 304 + flexible graphite composite gasket | ≤650
12 | Pure aluminum plate L3 + asbestos rubber sheet coated gasket | ≤200
13 | Pure copper plate T3 + asbestos rubber sheet coated gasket | ≤300
14 | Tin-plated thin copper plate + asbestos rubber sheet coated gasket | ≤400
15 | Zinc-plated thin copper plate + asbestos rubber sheet coated gasket | ≤400
16 | 0Cr18Ni9 + asbestos rubber sheet coated gasket | ≤500
17 | 00Cr19Ni10 + asbestos rubber sheet coated gasket | ≤500
18 | 00Cr17Ni14Mo2 + asbestos rubber sheet coated gasket | ≤500
19 | 0Cr18Ni9 + specially made asbestos paper fiber wound gasket | ≤500
20 | 0Cr17Ni14Mo2 + flexible graphite strip wound gasket | ≤650
21 | 00Cr17Ni14Mo2 + polytetrafluoroethylene wound gasket | ≤200
22 | 10 or 08 + flexible graphite toothed composite gasket | ≤450
23 | 0Cr13 + flexible graphite toothed composite gasket | ≤540
24 | 304 + flexible graphite toothed composite gasket | ≤650
25 | 316 + polytetrafluoroethylene toothed composite gasket | ≤200
26 | PTFE with glass fiber | -100～260
Operating temperatures of commonly used packing materials for valves
Serial number | Name | Operating temperature (°C)
1 | Flexible graphite packing ring | ≤600
2 | PTFE packing ring | ≤200
3 | Stainless steel wire + flexible graphite woven packing | ≤600
4 | Expanded polytetrafluoroethylene graphite strip woven packing | ≤250
5 | Oil-impregnated asbestos rope | ≤450
6 | Graphite asbestos rope | ≤450
This is a detailed list of the operating temperature ranges for common gaskets and packing materials used in valves. **Operating temperatures for commonly used gaskets in valves: ** 1. Natural rubber: -50～90°C 2. Neoprene: -40～100°C 3. Nitrile rubber: -30～110°C 4. Styrene-butadiene rubber: -30～100°C 5. EPDM rubber: -40～130°C 6. Fluororubber: -50～200°C 7. Asbestos rubber sheet: ≤300°C 8. Synthetic fiber rubber: -40～200°C 9. PTFE: ≤200°C 10. Low-carbon steel + flexible graphite composite gasket: ≤450°C 11. 304 + flexible graphite composite gasket: ≤650°C 12. Pure aluminum plate L3 + asbestos rubber sheet coated gasket: ≤200°C 13. Pure copper plate T3 + asbestos rubber sheet coated gasket: ≤300°C 14. Tin-plated thin copper plate + asbestos rubber sheet coated gasket: ≤400°C 15. Zinc-plated thin copper plate + asbestos rubber sheet coated gasket: ≤400°C 16. 0Cr18Ni9 + asbestos rubber sheet coated gasket: ≤500°C 17. 00Cr19Ni10 + asbestos rubber sheet coated gasket: ≤500°C 18. 00Cr17Ni14Mo2 + asbestos rubber sheet coated gasket: ≤500°C 19. 0Cr18Ni9 + specially made asbestos paper fiber wound gasket: ≤500°C 20. 0Cr17Ni14Mo2 + flexible graphite strip wound gasket: ≤650°C 21. 00Cr17Ni14Mo2 + PTFE wound gasket: ≤200°C 22. 10 or 08 + flexible graphite toothed composite gasket: ≤450°C 23. 0Cr13 + flexible graphite toothed composite gasket: ≤540°C 24. 304 + flexible graphite toothed composite gasket: ≤650°C 25. 316 + PTFE toothed composite gasket: ≤200°C 26. PTFE with glass fibers: -100～260°C **Operating temperatures for commonly used packing materials in valves:** 1. Flexible graphite packing ring: ≤600°C 2. PTFE packing ring: ≤200°C 3. Stainless steel wire + flexible graphite woven packing: ≤600°C 4. Expanded PTFE graphite strip woven packing: ≤250°C 5. Oil-impregnated asbestos rope: ≤450°C 6. Graphite-asbestos rope: ≤450°C These values indicate the suitability of different material gaskets and packing materials at various temperatures, and are crucial for selecting the appropriate ones for specific applications. .