Collection: KF (QF) Flanges & Components
KF flanges (QF) are a type of flange system commonly used in vacuum applications. They come in sizes 10, 16, 25, 40, 50 and are widely used in both rough and fine vacuum environments. KF flanges have flat sealing surfaces and conical flange sides. They are connected using O-rings with centering rings and secured with clamping chains, clamping rings, or quick-release clamps. Elastomers like NBR or FKM (Viton®) are commonly used as sealing materials. For special requirements, edge seals made of PTFE or aluminum can also be used.
KF flanges provide reliable vacuum seals with a leak rate typically specified at 1·10−9 mbar·l/s. They are suitable for various vacuum applications but have pressure limitations due to gas permeation through elastomer seals.
-
KF Blank Flange
Vendor:Regular price From CHF 3.15Regular priceUnit price / per -
KF Centring Ring / Seal
Vendor:Regular price From CHF 4.70Regular priceUnit price / per -
KF Bulkhead Clamp
Vendor:Regular price From CHF 23.45Regular priceUnit price / per -
KF Claw Clamp
Vendor:Regular price CHF 6.25Regular priceUnit price / per -
KF Full Nipple (Straight Connector)
Vendor:Regular price From CHF 54.75Regular priceUnit price / per -
KF Elbow 45°
Vendor:Regular price From CHF 50.05Regular priceUnit price / per -
KF Elbow 90°
Vendor:Regular price From CHF 31.30Regular priceUnit price / per -
KF Formed Bellows
Vendor:Regular price From CHF 70.40Regular priceUnit price / per -
KF Flexible Hose
Vendor:Regular price From CHF 62.55Regular priceUnit price / per -
KF Straight Reducing Nipple
Vendor:Regular price From CHF 21.90Regular priceUnit price / per -
KF Conical Reducing Nipple
Vendor:Regular price From CHF 20.35Regular priceUnit price / per -
KF Reducing Tee
Vendor:Regular price From CHF 65.70Regular priceUnit price / per -
KF 4-Way Cross
Vendor:Regular price From CHF 37.55Regular priceUnit price / per -
KF 4-Way Reducing Cross
Vendor:Regular price From CHF 57.85Regular priceUnit price / per -
KF 6-Way Cross
Vendor:Regular price From CHF 234.60Regular priceUnit price / per -
Hybrid Adapter CF to KF
Vendor:Regular price From CHF 70.40Regular priceUnit price / per -
Hybrid Adapter ISO-K to KF
Vendor:Regular price From CHF 92.30Regular priceUnit price / per -
KF Chain Clamp
Vendor:Regular price From CHF 56.30Regular priceUnit price / per -
KF Edge Seal
Vendor:Regular price From CHF 7.80Regular priceUnit price / per -
KF Replacement Seal (O-Ring)
Vendor:Regular price From CHF 1.55Regular priceUnit price / per -
KF Welding Flange
Vendor:Regular price From CHF 9.05Regular priceUnit price / per -
mini gate valve ISO-KF 40 with solenoid valve and position indicator
Vendor:Regular price CHF 1,200.00Regular priceUnit price / perCHF 1,400.00Sale price CHF 1,200.00Sale