BS425 to BS475

BS425 to BS475

Imperial / Inch sizes of FKM/FPM (e.g. Viton®) O-rings.  These sizes are usually looked up by a size code e.g. BS435 or AS435.  The size codes are as follows:

Size code O-ring cross section
-425 to -475 6.99


​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
BS425-V75 127.65 113.67 6.99 425 FKM 75 1+ 3+ 4+ 5+ MORE
£4.30 £3.10 £2.95 £2.86 CALL
BS426-V75 130.82 116.84 6.99 426 FKM 75 1+ 3+ 4+ 5+ MORE
£4.36 £3.16 £3.01 £2.92 CALL
BS427-V75 134 120.02 6.99 427 FKM 75 1+ 3+ 4+ 5+ MORE
£4.43 £3.23 £3.08 £2.99 CALL
BS428-V75 137.17 123.19 6.99 428 FKM 75 1+ 3+ 4+ 5+ MORE
£4.49 £3.29 £3.14 £3.05 CALL
BS429-V75 140.35 126.37 6.99 429 FKM 75 1+ 3+ 4+ 5+ MORE
£4.56 £3.36 £3.22 £3.12 CALL
BS430-V75 143.52 129.54 6.99 430 FKM 75 1+ 3+ 4+ 5+ MORE
£4.73 £3.53 £3.38 £3.29 CALL
BS431-V75 146.7 132.72 6.99 431 FKM 75 1+ 3+ 4+ 5+ MORE
£4.80 £3.60 £3.46 £3.36 CALL
BS432-V75 149.87 135.89 6.99 432 FKM 75 1+ 3+ 4+ 5+ MORE
£4.87 £3.67 £3.53 £3.43 CALL
BS433-V75 153.05 139.07 6.99 433 FKM 75 1+ 3+ 4+ 5+ MORE
£4.93 £3.73 £3.59 £3.49 CALL
BS434-V75 156.22 142.24 6.99 434 FKM 75 1+ 3+ 4+ 5+ MORE
£5.00 £3.80 £3.66 £3.56 CALL
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