Specification
ISO 5892 (1981):
Rubber Building Gaskets - Materials For Preformed Solid Vulcanised
Stuctural Gaskets
| Property |
Unit |
Limits
|
Document
specifying test method |
Type E |
Type F |
| Hardness, IRHD |
IRHD |
75±5 |
85±5 |
ISO 48 |
Tensile Strength, MPa min
|
MPa |
12 |
12 |
ISO 37 |
Elongation at Break,
% min
|
% |
175 |
125 |
ISO 37 |
| Compression set after 22h
at 100°C, max, % |
% |
35 |
35 |
ISO 815 |
| Ozone resistance 200 pphm,
elongation 20%; duration 100 h at 40°C |
- |
no cracking |
no cracking |
ISO 1431/1 and Sub-Clause
6.5
|
| Hardness increase after
7 days at – 10°C, max, IRHD |
IRHD
|
10 |
10 |
ISO 3387 |
Maximum change from unaged value
after ageing for 14 days at 100°C
Hardness, IRHD
Tensile strength, %
Elongation at break, %
|
IRHD
%
|
+10 -0
-15
-40
|
+10 -0
-15
-40
|
ISO 188 + ISO 48
ISO 188 + ISO 37
ISO 188 + ISO 37
|
| note: |
Two type of material are specified;
Type E, with a nominal hardness of 75 IRHD, is intended for
the gaskets and for the lock-strip.
Type F, with a nominal hardness of 85 IRHD, is intended for
the lock-strip only.
|
|
