Viton® O-Ring
• Viton (Fluorocarbon FKM)
• 200°C Maximum

Change Your Flange Size With One Centering Ring!

The use of Adapter Centering Rings is simple:
One side of the ring is NW20 and the other NW25.
By using this centering, you CONVERT a
NW20 flange size to a NW25 Flange

NW, KF, QF Series High Vacuum Flanges

NW20 (KF20) OD: 1.57" – Centering Ring Counter Bore: 0.86"

NW25 (KF25) OD: 1.57" – Centering Ring Counter Bore: 1.03"

NW20 Flanges Are Sometimes Used Overseas (Uncommon)

The use of Adapter Centering Rings is simple:
One side of the ring is NW20 and the other NW25.
By using this centering, you CONVERT a
NW20 flange size to a NW25 Flange

NW20 (KF20) vacuum flange size is not popular in the US,
but may be necessary to use US flanges.
NW20-25-ASR-V Compare to: 4000055 QF20/25-ACR-VT QF20-25-ASRV NW-20/25-CR P101247 K100087-CR 710011 100315823 KCA2025SV

Stainless Adaptive Centering Ring
NW20 to NW25
(NW20-25-ASR-V)
NW20-25-ASR-VPrice: $19.32Sale: $8.50