BS309 to BS395

BS309 to BS395

Imperial / Inch sizes of FKM/FPM (e.g. Viton®) O-rings.  These sizes are usually looked up by a size code e.g. BS316 or AS316.  The size codes are as follows:

Size code O-ring cross section
-309 to -395 5.33


​Remember to check media compatibility using our Chemical Compatibility Guide.

More information:
O-ring material data sheet - FKM 75
O-ring Housing dimensions
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Article No. OD ID CS Ref. Material
  Price breaks
Each  
QTY ADD
BS309-V75 21.12 10.46 5.33 309 FKM 75 5+ 10+ 20+ 50+ MORE
£0.58 £0.40 £0.31 £0.29 CALL
BS310-V75 22.73 12.07 5.33 310 FKM 75 5+ 10+ 20+ 50+ MORE
£0.60 £0.42 £0.34 £0.31 CALL
BS311-V75 24.3 13.64 5.33 311 FKM 75 5+ 10+ 20+ 50+ MORE
£0.62 £0.44 £0.36 £0.34 CALL
BS312-V75 25.9 15.24 5.33 312 FKM 75 5+ 10+ 20+ 50+ MORE
£0.64 £0.46 £0.37 £0.35 CALL
BS313-V75 27.47 16.81 5.33 313 FKM 75 5+ 10+ 20+ 50+ MORE
£0.65 £0.47 £0.38 £0.36 CALL
BS314-V75 29.08 18.42 5.33 314 FKM 75 5+ 10+ 20+ 50+ MORE
£0.67 £0.49 £0.41 £0.38 CALL
BS315-V75 30.65 19.99 5.33 315 FKM 75 5+ 10+ 20+ 50+ MORE
£0.68 £0.50 £0.42 £0.40 CALL
BS316-V75 32.25 21.59 5.33 316 FKM 75 5+ 10+ 20+ 50+ MORE
£0.70 £0.52 £0.43 £0.41 CALL
BS317-V75 33.82 23.16 5.33 317 FKM 75 5+ 10+ 20+ 50+ MORE
£0.71 £0.53 £0.44 £0.42 CALL
BS318-V75 35.43 24.77 5.33 318 FKM 75 5+ 10+ 20+ 50+ MORE
£0.72 £0.54 £0.46 £0.43 CALL
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