Seals Eastern, Inc.
7182X gaskets, seals, and o-rings
Solve Leaking Problems in Steam and High pH Fluids
Description: 80-durometer FEPM. Excellent long-term, high temperature (220C) service in aqueous & nonaqueous electrolytes, including organic acid (OAT) coolants. Outstanding long-term resistance to compressive stress relaxation in thermally and chemically aggressive environments such as high pH coolants and steam. 7182X exhibits ultra low compression set even after long term service.
| ASTM Test Method |
Property | Avg. | Value | Min Value |
|---|---|---|---|---|
| D412 | Tensile Strength: | 21.0 MPa | 3045 psi | 2800 psi |
| Ultimate Elongation: | 130 % | 100 % | ||
| Stress at Elongation: | ||||
| - M25 | 2.9 MPa | 423 psi | - - - | |
| - M50 | 6.1 MPa | 888 psi | 550 psi | |
| - M100 | 14.3 MPa | 2075 psi | 1500 psi | |
| Strain Energy at 20% Strain: | 0.3 MPa | 43 psi | - - - | |
| Calculated Shear Modulus, G: | 5.6 MPa | 809 psi | - - - | |
| Calculated Young Modulus, E: | 16.7 MPa | 2428 psi | - - - | |
| E-secant from the initial slope: | 15.7 MPa | 2282 psi | - - - | |
|
D624, Die B |
Tear Strength: | 1.3 MPa | 182 psi | |
| Max Value | Min Value | |||
|
D2240, Typ A |
Durometer Hardness: | 84 pts | 78 pts | |
|
D297, 16.3.1 |
Specific Gravity: | 1.56 | 1.53 |
| D395, Meth.B: | |||
| COMPRESSION SET: | -120 O-ring | -214 O-ring | |
| (a) Dry Heat | ASTM Button | 0.103 c/s | 0.139 c/s |
| 70 hrs @ 200C (392F) | 11% | - - - | - - - |
| 168 hrs @ 200C | 12% | - - - | - - - |
| 336 hrs @ 200C | 14% | - - - | - - - |
| 1000 hrs @ 200C | - - - | 37% | 32% |
|
(b) Water-Ethylene Glycol Nalcool® 3000 (6%) (pH 11.0) |
|||
| 10 hrs @ 200C | - - - | 29% | 26% |
| 100 hrs @ 200C | - - - | 47% | 40% |
| 10000 hrs @ 200C | - - - | 58% | 57% |
| D865 | |||
| DRY HEAT AGING: | Tensile Chg | Elongation Chg | Durometer Chg |
| 70 hrs @ 200C | 7% | 16% | 0 |
| 1000 hrs @ 200C | -2% | 42% | -4 pts |
