For silicone o-rings, the standard nominal durometer is 70. Since 1950, we’ve manufactured custom rubber products utilizing compression and injection molding. The buyer is our associate when growing o-ring products.

Durometer is an industry standard measurement for a material’s hardness. Most often for rubber seals, durometer is measured and listed in accordance with the “Shore A” scale. Typical durometers for traditional rubber seals are 70, 75 and ninety, relying on the fabric. Durometer is also typically stated and accepted with a “+/- 5” tolerance.

Polyurethane O-rings are often used for hydraulic fittings, cylinders and valves, pneumatic tools and firearms. Now that you just’ve chosen your most well-liked O-ring materials, are you having trouble sizing it? Read another considered one of our current blogs to search out out extra about our handy O-ring measurement chart.

I use it for my storage door and occasional out of doors purposes where water is present as it does not wash away easily nor is it affected by temperature extremes. It's not the slick stuff that silicone grease is and I've seen it appears to dry out after a while and requires re-software. Polyurethane is well regarded for its all-round common toughness, in addition to for its notable abrasion and extrusion resistance. O-rings produced from this materials would not be appropriate for applications requiring good compression and heat resistance. The latter is due to a narrower operational temperature range of between -54 and 100 degrees Celsius.

Find out more about our O-Ring products by talking to us on , or -rubber.co.uk. The termsiliconecovers a large group of materials during which vinyl-methyl-silicone is often the central ingredient. Silicones are excellent seal materials for extreme temperature in static functions. Outstanding flex and fatigue life, superb for ozone and UV radiation, insulating properties and physiologically neutral.

Silicones can be synthesized with a wide variety of properties and compositions and can be compounded to satisfy FDA, USP Class VI, USDA, three-A and Canada AG requirements. They also have good resistance to fungal and organic damage. This is silicone, not silicon, which is a chemical element. The last consideration for an o-ring after dimension and materials type is the durometer.