Sanitary gaskets (O-rings) are used to seal joints between two separate parts in a process system. General materials such as PTFE, Buna-N (NBR), silicone, Viton (FPM) and EPDM are available to meet the different requirements of different media.
| Size | 1/2″ thru 12″ |
| Material | PTFE, EPDM, Buna-N, Silicone, Viton etc. |
| Standard | 3A, DIN, SMS, BS, ISO, BPF, ISO, IDF,INCH etc. |
| PTFE | VITON(FPM) | BUNA-N(NBR) | SILICONE | EPDM | |
| Strength | – | AA | AAA | AAA | AAA |
| Steam Resistance | AAA | AAA | AA | AA | AAA |
| Impact
Resistance |
AAA | A | A | A | AA |
| Water
Resistance |
AA | AAA | AAA | AA | AAA |
| Wear
Resistance |
AAA | AAA | AAA | A | AA |
| Alkaline
Resistance |
AAA | AAA | AA | AA | AAA |
| Acid
Resistance |
AAA | AAA | AA | A | AA |
| Scale
Resistance |
AAA | AAA | A | AAA | AAA |
| Gas
Tightness |
AAA | AAA | AA | A | AA |
| Operating
Temp. |
-250~260°C | -10~280°C | -10~120°C | -100~250°C | -50~130°C |
