Ring Joint Gaskets are for oilfield and process industry duties.
> RX gaskets are designed for pressures up to 15,000 PSI.
> RX types of gaskets are more costly then Oval and Octagonal rings.
> RX type gaskets perform excellent in API 6B flanged.
The style RX is an adaptation of the standard style R which energizes on assembly. The RX is designed to fit the same groove design as a standard style R, making the joints interchangeable.
Consideration should be given to the difference in finished make-up distance.
The modified design uses an energizing on assembly effect with improves the efficiency of the seal.

Tolerances (Inches)
> "A" Width of ring: +0.008-0.008
> "H" Height of ring: +0.008-0.000
> "OD" Outer dimension of ring: +0.020,-0.000
> "23o" Angle: 1/2o