ELASTOMERIC O-RINGS FIXTURES Elastomeric materials are frequently tested in the form of rings either because the finished product is an o-ring or because ring-shaped samples can be readily prepared. Tensile testing of ring specimens requires a special fixture.
Principle of Operation Designed for testing elastomeric materials in the form of rings, these fixtures avoid local stress concentrations by using a lower spindle that is rotated by a toothed belt driven from the moving crosshead. The upper spindle rotates freely and the rotation frequency of the lower spindle is easily selected by moving the toothed belt from one pulley to another. The simple drive mechanism avoids the need for lubricants or separate electric motors. 2.1
Application Range
Application Specific Accessories
• Tensile testing of elastomeric rings to a variety of international standards
Safety Advice Review safety note on page 234
1
O-RING FIXTURES Catalog Number
1
Testing Standards
Upper Fitting
Capacity kN
kgf
lbf
Lower Fitting
Upper Effective Length
Lower Effective Length
mm
in
mm
in
°C
°F
Temperature Rating
2717-068
Elastomeric o-ring test fixture for single column systems
1
100
220
6 mm Clevis pin (type Om)
6 mm Clevis pin (type Om)
98
3.8
98
3.8
+10 to +40
+50 to +100
2717-078
Elastomeric o-ring test fixture for 336X, 34TM, 446X, 556X, 596X and 68TM standard height table top systems
1
100
220
6 mm Clevis pin (type Om)
0.5 in Clevis pin (type Dm)
98
3.8
98
3.8
+10 to +40
+50 to +100
ITEMS FOR USE WITH 2717-068, 2717-069, 2717-077, 2717-078, 2717-079 Catalog Number
Description
2717-070
Spindle set per ASTM D412 Proc. B
2717-071
Spindle set per BS 3704
2717-072
Spindle set per DIN 53504 R1
2717-073
Spindle set per DIN 53504 R2
2717-074
Spindle set - ⅛ in
2717-075
Spindle set - ¼ in
2717-076
Spindle set per ASTM D1414
33
