Product Name
KF / NW (ISO-KF) Vacuum Centering Ring — SS304 (KF16–KF50)
Product Summary
SS304 stainless steel centering ring for KF (NW) quick-flange vacuum connections. Fits between
two KF flanges to align the bore and seat the O-ring. Metal ring only (O-ring not included). Sizes:
KF16, KF25, KF40, KF50.
A KF (NW) centering ring machined from SS304 stainless steel. It sits between two KF
quick-release flanges, centers the bore, and holds the sealing O-ring in its groove so a KF clamp
can pull the joint tight. This is the metal centering ring only — the O-ring and clamp are ordered
separately. Available in KF16, KF25, KF40 and KF50.
- Material: SS304 stainless steel.
- Standard: KF / NW (ISO-KF) quick-flange vacuum fitting.
- Function: centers the bore between two KF flanges and seats the O-ring for
sealing. - Supplied as: the metal centering ring only — O-ring not included.
- Sizes: KF16 (NW16), KF25 (NW25), KF40 (NW40), KF50 (NW50).
- Manufactured under our ISO 9001 quality system.
Sample Policy
We are happy to provide product samples for customers to evaluate quality or conduct testing. The process typically begins with a quotation based on the customer’s specifications.
If the pricing is acceptable, we can offer samples either free of charge or at a cost depending on the product type and availability.
Shipping fees are borne by the customer.
Order Process
After confirming the product requirements and other details with the customer, we will issue a Sales Confirmation for approval. Once confirmed, the customer is required to pay a 30% deposit to proceed with production.
When mass production is completed and the goods pass inspection, the customer must pay the remaining 70% balance before shipment is arranged.
Related Products
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N. Pipe FittingsStainless Steel 90° Elbow — SS202/304/316, PS Thread (Class 150)
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N. Pipe FittingsStainless Steel Pipe Coupling — SS304, 3/4″ (PT/BSPT)
FAQ
A. How can I request a quote?
Please provide a detailed inquiry sheet including product specifications, materials, quantities, and any special requirements. We will offer a quotation based on your request.
B. What are your quotation terms?
Our quotations are typically based on FOB terms. However, we can also offer CFR, CIF, or other Incoterms upon request.
C. What is your Minimum Order Quantity (MOQ)?
We have no MOQ. We operate on a made-to-order basis and accept orders of any size — trial orders are welcome. For smaller orders, freight is arranged and borne by the buyer.
D. What are your payment terms?
By T/T – 30% down payment upon order confirmation, and 70% balance before shipment.
E. What is your lead time?
Our general lead time ranges from 30 to 45 days, depending on the order complexity and production schedule.
For more complex orders or during peak seasons, it may extend to 60–90 days.
Want to know more?
If you’re interested in any of our products or services, simply fill out the form below. Our team will get in touch with you as soon as possible to provide the information you need.