Telephone: 01903 713566 Email:sales@amsilicones.co.uk

Quality Assurance & Tolerances

Advanced Materials quality commitment

Advanced Materials provides high specification silicone rubber products and all of our customers have specific requirements that we cater to. In every case, the quality of our products is of utmost importance to insure reliability and maximum life to their product. 

As a trusted partner, it is our job to identify these needs and ensure our bespoke rubber manufacturing service is tailored to meet them. 

Our quality commitment to continuous improvement in our processes ensures ever increasing standards are achieved, keeping us at the forefront of the silicone rubber manufacturing industry. From lowering our lead-times to improving quality procedures, we will be reliable in our service. 

Advanced Materials is proud of our quality assurance programme and is ISO 9001 accredited. We commit to ensuring full traceability of relevant processes and materials is controlled using documented quality management systems. We use batch numbers, control samples and documentation to meet the most stringent quality requirements giving you complete confidence in the silicone rubber products we supply.

Silicone Rubber – Tolerances for products

Advanced Materials offer standard dimensional tolerances to BS3734 Class E1 for silicone rubber extrusions.  The table below shows you what tolerances to expect. 

BS3734-1: 1997 is equivalent to ISO 3302-1 1996 

If we are not working to Class E1 as standard on your product, we will let you know in writing. If you have a specific tolerance requirement (i.e. cannot be larger than X, or –ANY/+0mm, or simply must fit on a 3mm plate etc) then just let us know at quotation stage and we will endeavour to help with your requirement. 

Different tolerances apply for mouldings, cut lengths and sponge products.  If you have any questions, please get in contact with us at sales@amsilicones.co.uk. 

If you need a tolerance tighter than those listed above, please give us a call or email.  We love a challenge!  

For 99% of our customers, our standard tolerances are enough to satisfy their application conditions but we know that sometimes something out of the ordinary arises where dimensions are critical.  We look forward to working with you on finding a solution that is manufacturable, repeatable and satisfies your requirements.

Nominal Extrusions Dimensions Class E1
+/-
Class E2
+/-
Class E3
+/-
Above Up to & including
0.0 1.5 0.2 0.3 0.4
1.5 2.5 0.2 0.4 0.5
2.5 4.0 0.3 0.4 0.7
4.0 6.3 0.4 0.5 0.8
6.3 10.0 0.4 0.7 1.0
10.0 16.0 0.5 0.8 1.3
16.0 25.0 0.7 1.0 1.6
25.0 40.0 0.8 1.3 2.0
40.0 63.0 1.0 1.6 2.5
63.0 100.0 1.3 2.0 3.2