Industrial Gaskets stocks an extensive range of Ring Type Joint – RTJ gaskets. The Ring Type Joint – RTJ – Type SBX series is dimensionally the same as the standard Type BX Ring Type Joint gasket. The Type SBX subsea ring-type joint (RTJ) gasket with two pressure-balancing holes, designed to work with API 17D standards for subsea wellhead and tree equipment to prevent pressure lock during underwater connection. The “S” in SBX signifies the two drilled holes, which allow trapped liquid to escape and ensure the gasket is suitable for underwater, high-pressure applications They feature two cross-drilled holes that run through the gasket’s cross-section. These holes prevent pressure build-up and lock when making up connections underwater. The RTJ – Type SBX series designed primarily for special applications involving high pressures up to 20,000 psi. SBX gaskets are manufactured to meet the standards of API 17D and are designed for use with API 6BX or API 6A flanges. They are not recommended for re-use. A range of materials available including 316 Stainless Steel, Carbon/Mild Steel, PTFE Coated and Super Duplex Rings Available BX150 through to BX172 Size Chart for Series “SBX” NOMINAL PIPE SIZE PRESSURE CLASSES API 6A – BX 2000# 3000# 5000# 10000# 15000# 20000# 1 11/16″ – – – BX-150 BX-150 – 1 13/16″ – – – BX-151 BX-151 BX-151 2 1/16″ – – – BX-152 BX-152 BX-152 2 9/16″ – – – BX-153 BX-153 BX-153 3 1/16″ – – – BX-154 BX-154 BX-154 4 1/16″ – – – BX-155 BX-155 BX-155 5 1/8″ – – – BX-169 – – 6 5/8″ – – – BX-170 BX-170 – 7 1/16″ – – – BX-156 BX-156 BX-156 8 9/16″ – – – BX-171 BX-171 – 9″ – – – BX-157 BX-157 BX-157 11″ – – – BX-158 BX-158 BX-158 11 5/32″ – – – BX-172 BX-172 – 13 5/8″ – – BX-160 BX-159 BX-159 BX-159 16 3/4″ – – BX-161 BX-162 BX-162 BX-162 – 18 3/4″ – – BX-163 BX-164 BX-164 – 21 1/4″ – – BX-165 BX-166 – – 26 3/4″ BX-167 BX-168 – – – – 30″ BX-303 BX-303 – – – – Please note that the above chart is a guideline only. Please contact our sales team for further clarification.
