...
2025-08-16 06:35
1171
...
2025-08-16 06:07
96
...
2025-08-16 06:07
603
...
2025-08-16 06:05
1623
...
2025-08-16 05:17
2868
...
2025-08-16 05:11
735
...
2025-08-16 05:05
397
...
2025-08-16 04:44
2371
...
2025-08-16 04:03
2809
...
2025-08-16 04:03
82
Other important factors are ensuring the hardness and roughness of the shaft are correct. A shaft hardness of HRC 45 is recommended for a rubber sealing lip, with a roughness of Ra 0.4-0.8. A higher shaft hardness of HRC 60 and shaft roughness of Ra 0.1-0.4 is recommended for a PTFE lip.