Quality Assurance Services
Quality is an integral part of the Superior customer service philosophy. Total control of all aspects of seal manufacture ensures that we always comply with recognised standards applied by the industry. With our expertise we can closely define and control seal tolerances and surface characteristics. Our continual investment programs enable us to apply the latest control and inspection techniques.
We thoroughly recommend that all quality and specification issues are addressed at the earliest point in the development stage of any new project. This ensures that all customer-critical features and commercial issues are identified from the outset.
O-ring Size Range Standards
At Superior, we pride ourselves on our precision o-ring range which exceeds the cross-sectional tolerances for the following dimensional standards;
- ISO 3601-1
- DIN 3771 Part 1
- BS 4518
The benefit of close tolerances on an o-ring cross section (d2), is the ability to reduce our customer’s tolerance chain and improve the overall performance of the customer’s product.
In the Superior o-ring size list, the internal diameters conform to ISO 3601-1 tolerances and the cross section diameter has a reduced tolerance. These precision o-ring tolerances apply to NBR 70 compounds. O-rings manufactured in other compounds and hardness’ are produced to conform ISO 3601-1 tolerances, however dimensions for the internal diameter may be towards the lower end.