NBR FKM EPDM PTFE water o-ring oil proof rubber seals

Question: What's the material of the seal?

Answer: Lip material is filled PTFE; Housing material is SUS304.

Question: What's the difference between Counterclockwise/CCW and Clockwise/CW?

Answer: That means shaft rotate direction from lower pressure side. Right seal derection for longer service time.

Question: What's the size of d2, d1 and b in your size chart?

Answer: d2=shaft diameter, d1=bore diameter, b=seal width.

Question: Why don't you have the size I need in your chart?

Answer: For other sizes and special types, pls contact us: sales(at)chenmingseal.com

Question: Is the seal for High Pressure, High Rotate Speed, High temperature?

Answer: Pressure: vacuum to 1.5Mpa (special type 6Mpa); Speed: 25m/s (special type 40m/s); Temperature: -60 C to +260 C

Question: Can the PTFE oil seal replace traditional TC/SC rubber oil seal?

Answer: Yes, it's the best one of replacement, the service life is 10 times longer than TC/SC.

Question: Is there any shaft/bore design difference bettwen PTFE oil seal and TC/SC?

Answer: The only one differnce is PTFE oil seal require shaft hardnees upto HRC55, pls combine our Bushing for unhardend shaft.

Question: How long is the seal's service life?

Answer: Tested life is 8000 hours with condition: pressure 1.5Mpa, rotate speed 15m/s, temperature 200 C, media lubrication oil.

Question: How long is the lead time?

Answer: We'll ship out in 24 hours when IN STOCK.

Question: How long can we receive the seals?

Answer: 15-30days by AliExpress Premium Shipping. 30-60days by AliExpress Standard Shipping/ Special Line-YW.