O-Rings Nitrile (NBR) Rubber
Use these O-rings to perform field maintenance on scuba diving gear.
From Australia! We have sourced quality Australian-made NBR O-rings, supporting local manufacturers.
Nitrile Butadiene Rubber (NBR) - Although its physical and chemical properties vary depending on the polymer’s composition of nitrile, this form of synthetic rubber is unusual in being generally resistant to oil, fuel, and other chemicals (the more nitrile within the polymer, the higher the resistance to oils but the lower the flexibility of the material). However, it's properties do not generally support being Oxygen (O2) compatible. It is not recommended using these O-rings on any equipment using higher concentrations of oxygen.
Durometer - may be defined and measured as a material's hardness and resistance to permanent indentation. The higher the number the harder the O-ring. These NBR O-rings come in 70 or 90 durometer, depending on the application.
Softer O-rings are generally used in dynamic applications (they move or have another moving surface rub against them) and should be lubricated. Harder O-rings are generally used in static applications and used to make a non-moving seal. Depending on equipment manufacturer's guidelines, in general terms, dynamic o-rings need to be lubricated and static O-rings may require a small amount of lubricant to aid installation (without pinching) or no lubricant at all - refer to applicable manufacturer's data for installation guidence.
Sizes: NBR O-ring sizes in these packs include:
- 003, 006, 111 (70 durometer),
- 010, 011, 012, 014, 112 and 214 (90 durometer).
O-rings come in a pack of 5, except for size 214, which comes in a pack of 2.