O Ring Durometer Chart

Durometer shore a scale is a type of measurement for rubber material hardness.

O ring durometer chart.

For most applications compounds having a durometer hardness of 70 to 90 is the most suitable compromise. Wherever possible 70 durometer hardness should be used as it offers the best combination of properties for most o ring applications. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. We have millions of as568 o rings in stock which can be purchased easily through our o rings online store.

Harder materials like 70 75 or 90 durometer compounds offer greater resistance to extrusion. In dynamic applications the hardness of the o ring is doubly important because it also affects both breakout and running friction. Generally most rubber materials fall under the rubber durometer scale of shore a. This silicone 70 durometer specifications chart will help you determine if these silicone material properties will be compatible with your rubber or o ring seal application.

O ring gland clearance gap size. Generally most rubber materials fall under the rubber durometer scale of shore a. O ring size chart o ring cord stock osk assorted o ring kits osk o ring repair kits osk hydraulic seal kits osk air nailer o ring kits o ring lube o ring tools as568 o rings inch metric o rings mm osk pool spa pump o rings hydraulic seals inch o ring glue thread sealant vulcanized o rings o ring splice kits tools hydraulic seals metric oil. In the o ring industry another hardness scale is used due to the curved surface of the o ring cross section causing problems with accurately reading shore a.

Excessive clearance and or pressure can result in sealextrusion and failure. 70 durometer hardness should be used whenever possible as it offers the best combination of properties for most o ring applications. Pressure and clearance gap chart. Thus if you need a rubber or o ring durometer that feels like a running shoe sole review our rubber hardness chart below then pick shore 70a.

Tolerances should be considered for the o ring and the. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. We can change the formulation of the rubber so that the specifications meet your needs. The o ring store llc.

Consider use of back ups or product selection with large gaps or pressure. The higher the durometer number the harder the compound. This as568 o ring chart is a sae size standard for o rings and shows as568 rev b or as568b o ring sizes which supersedes as568 rev a or as568a o ring dimensions. Softer compounds stretch easier and seal better on rough surfaces.

Thus if you need a rubber or o ring durometer that feels like a running shoe sole review our rubber hardness chart below then pick shore 70a. O ring application pressure vs.