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KF Center Ring with Outer Ring&Oring

Centering ring material: Aluminum or SS304
O-ring Material: NBR or Viton
Size: DN10 - DN50

A KF center ring with an outer ring and O-ring is a type of vacuum seal used in high vacuum systems. It is designed to provide a tight and reliable seal between two KF flanges. 

The center ring is typically made of aluminum or stainless steel and is circular in shape. It is placed between two KF flanges to create a vacuum-tight seal. The center ring has a grooved channel around its outer circumference that accepts an O-ring, which provides an additional sealing element. The outer ring, which is also circular, fits over the center ring and is secured in place by bolts or clamps. The outer ring ensures that the O-ring is properly seated in the grooved channel and helps to distribute the clamping force evenly across the flange.


Specification CR O-Ring A B C D
KF10CRVA Aluminum Viton
10 12 3.9 8
KF16CRVA 16 17 3.9 8
KF25CRVA 25 26 3.9 8
KF40CRVA 40 41 3.9 8
KF50CRVA 50 52 3.9 8
KF10CRVS SS304 Viton 10 12 3.9 8
KF16CRVS 16 17 3.9 8
KF25CRVS 25 26 3.9 8
KF40CRVS 40 41 3.9 8
KF50CRVS 50 52 3.9 8
KF10CRNA Aluminum NBR 10 12 3.9 8
KF16CRNA 16 17 3.9 8
KF25CRNA 25 26 3.9 8
KF40CRNA 40 41 3.9 8
KF50CRNA 50 52 3.9 8
KF10CRNS SS304 NBR
10 12 3.9 8
KF16CRNS 16 17 3.9 8
KF25CRNS 25 26 3.9 8
KF40CRNS 40 41 3.9 8
KF50CRNS 50 52 3.9 8


KF Center Ring with Outer Ring&Oring
Centering ring material: Aluminum or SS304
O-ring Material: NBR or Viton
Size: DN10 - DN50
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