What is the difference between round-profile O-rings and square cross-section O-rings?
Round-profile O-rings have a circular cross-section, while square cross-section O-rings have a rectangular cross-section. Square cross-section O-rings offer a larger continuous sealing surface, making them suitable for tighter seals in static applications such as hose, pipe and faucet connections.
What are the factors to consider while selecting suitable Grainger O-rings for my application?
Factors to consider while choosing O-rings are nominal inside diameter, nominal width and nominal outside diameter. You should measure the dimensions of the groove or mating surfaces where the O-ring will be installed and select the size that matches those measurements closely.