The type BX energized ring type joints, manufactured in accordance with API 6A, are designed for use on pressurized systems up to 20,000 psi.
When correctly fitted, the type BX gasket allows virtual face to face contact of the flange faces which means that the gasket in fully trapped on both the inner and outer diameters.
All BX gasket incorporate a pressure balance hole to ensure equalization of pressure which may be trapped in the grooves.
Sunwell 830 Gasket Standard
Standard style BX ring type joints are manufactured in accordance with both API 6A and ASME B16.20 size and ratings. Available in both oval and octagonal configurations, both types are interchangeable on the modern octagonal type grooved flanges

Sunwell 830 Tolerances (Inches)
> "A" Width of ring: +0.008-0.000
> "D" Height of ring: +/-0.002
> "OD" Outer dimension of ring: +0.000,-0.005
> "23^o" Angle: +/- 1/2^o
Sunwell 830 Applicable Standards:
> Although similar in style to the octagonal ring joint
> BX series can only be used with 6BX flanges
> BX rings for higher pressure rating starting at 5,000 lbs, and ending with 20,000 lbs.
> Rings can not be re-used.

Used the small carton packing the gaskets then hand into the wooden case to keep the gaskets safe.

Welcome to send the inquire to sunwell about BX Ring Joint gaskets.