Xem Studiomeasured geometryLibrary › Tri-clamp & pipe › ISO 1179 / BSPP (G thread) ports with O-ring or bonded seal: D3, D4…
bonded-seal-g3-8-id17.28-od23.8-t2
bonded (Dowty-type) seal envelope for G 3/8, ring ID 17.28 × OD 23.80 × 2 mm thick (RS Components and TSS agree on all three); a plain ring: the metal / rubber section of a real bonded seal is not published
Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.
STEP STL free, CC BY 4.0 (credit "Xem Studio")
Let your AI pull this. Add
Set it up →https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.From the full sheet
ISO 1179 / BSPP (G thread) ports with O-ring or bonded seal: D3, D4, O-ring size, Dowty bonded-seal ID, OD, thickness: every size, notes, mating features and sources. What O-ring or bonded (Dowty) seal does a G 1/4 or G 1/2 BSPP port use, and what are its dimensions?