SWS-TF
Sealing Washer – Teflon Coating
Dimension Drawing
Dimensions/Specifications/CAD
| Part Number | Nominal | d | D | h | t | t1 | C | Qty per Pack | Mass (g) |
|---|---|---|---|---|---|---|---|---|---|
| SWS-3-TF | 3 | 3.2 | 7 | 0.5 | 2.2 | 2.2 | 6.3 | 1 | 0.2 |
| SWS-4-TF | 4 | 4.2 | 8 | 0.5 | 2.1 | 2.3 | 7.2 | 1 | 0.2 |
| SWS-5-TF | 5 | 5.2 | 9.5 | 0.8 | 2.7 | 2.8 | 8.2 | 1 | 0.6 |
| SWS-6-TF | 6 | 6.2 | 11.5 | 1 | 3 | 3 | 9.8 | 1 | 1 |
| SWS-8-TF | 8 | 8.2 | 15.2 | 1 | 3.2 | 3.3 | 13.4 | 1 | 1.8 |
Material/Finish
| SWS-TF | |
|---|---|
| Main Body | SUS304 Teflon＊ Coating |
| Rubber Seal | Fluororubber |
＊Teflon is a registered trademark of DuPont.
Application
FPD production equipment, semiconductor fabrication wet processes,
printed circuit board etching devices, metallic surface treatment
equipment and facilities, cleaning equipment, and chemical plants
Characteristics
- Sealing washers with a built-in rubber seal.
- Sealing washers prevent the leakage of gas and liquid from the bearing surface of the screw head.
- The washer body is coated with Teflon. The rubber seal is made of fluororubber, which has excellent chemical resistance.
- Chemical Resistance of Teflon Coating⇒Chemical Resistance of Chemical Resistance Screws
Usage example
Use with SNHS-HTF Hex Head Screws – Teflon Coating for Head （SNHS-HTF） to prevent chemical liquids from moving from the bearing surface to the thread.
Airtight test at 0.6 MPa confirmed that there is no leakage.
Precautions for Use
- Friction with the screw bearing surface during tightening may remove the coating. Take care not to tighten too much.
- When combining with SNHS-HTF , use the recommendation torque of SNHS-HTF or less for tightening.
