We precision-mould 'O' rings in over 100 high-performance and general grades of elastomer - and stock over seven million 'O' rings ready for immediate despatch.
A vast number of these are in the explosive decompression (ED) resistant materials and sizes specified by operators and manufacturers of oilfield equipment.
If we do not hold the exact sizes of 'O' rings you require in the materials you need, we have the flexible production systems to mould them on very short lead times - for supply within days.
Stocked 'O' ring materials
FR58/90 - explosive decompression (ED) resistant grade of fluorocarbon FPM, based on Viton® from DuPont Performance Elastomers. This grade is Norsok M-710 qualified for ED resistance and sour gas aging.
FR25/90 - explosive decompression (ED) resistant grade of fluorocarbon FPM with low temperature capability. This grade is Norsok M-710 qualified for ED resistance and sour gas aging.
Elast-O-Lion® 101 - explosive decompression (ED) resistant grade of hydrogenated nitrile HNBR developed for oilfield duties. This grade is Norsok M-710 qualified for ED resistance and sour gas aging.
Elast-O-Lion® 985 - explosive decompression (ED) resistant grade of hydrogenated nitrile HNBR with low temperature capability. Developed for oilfield duties.
PB80 - medium nitrile NBR grade for general applications. Excellent oil resistance.
FR10/80 - fluorocarbon FPM for general applications. Excellent chemical resistance.
Elast-O-Lion® 180 - hydrogenated nitrile HNBR grade for general applications. Excellent resistance to oils, fuels and abrasive wear.
EP18/H/75 - ethylene-propylene EPM grade with excellent resistance to ozone, weathering, water and steam.
SIL 80/2 - silicone VMQ grade with good resistance to weathering and compression set at high temperatures.
Stocked 'O' ring sizes - precision moulded
SAE AS568A & BS1806 'O' rings -JW Chart 50 covers inch-size 'O' rings to these widely used standards, plus many intermediate inch sizes and metric equivalents. Click here to download a pdf (986KB) of Chart 50 'O' rings covering BS1806 & SAE AS568A.
BS4518 'O' rings - JW Chart 72 covers all metric-size 'O' rings to this standard, including those for pneumatic and static plug housings. Click here to download a pdf (675KB) of Chart 72 which covers BS4518 'O' rings.
JW Chart 17000 'O' rings - alternative inch-size range. Developed for the Royal Navy by James Walker and used in many industries. Click here to download a pdf (819KB) of Chart 17000 'O' rings.
We precision-mould 'O' rings in over 100 high-performance and general grades of elastomer - and stock over seven million 'O' rings ready for immediate despatch. 
