• Product Details
ISO63-K Bored Flange

Connection Type: Clamp

The ISO bored flange  is used for HV chamber ports and is available in two distinct styles; ISO-K which uses clamp fasteners and ISO-F which uses nut and bolt fasteners. A variety of bolt/clamp options permit joints between mixed ISO-K and -F flanges.

The design principles of ISO and KF seals are identical. Each flange face is counter-bored or grooved to receive a metal centering ring with an elastomeric o-ring around its O.D. As with KF, the ISO centering ring both aligns the flanges and holds the o-ring in place.

ISO flanges are limited (by the o-ring's properties) to applications with temperatures between ~0° C and 120–180° C, and pressure from atmosphere to ~10-8 torr or mbar.

Application: High and ultra-high vacuum apparatus, semiconductor, aerospace etc.

Product parameters
ISO63-K-B637SS304/SS316L957012 9063.7
ISO80-K-B764SS304/SS316L1108312 10576.4
ISO100-K-B102SS304/SS316L13010212 125101.8
ISO160-K-B153SS304/SS316L18015312 175152.9
ISO200-K-B204SS304/SS316L24021312 235203.7
ISO250-K-B255SS304/SS316L29026112 285254.5
ISO320-K-B305SS304/SS316L37031817 365305.3
ISO400-K-B407SS304/SS316L45040017 445406.9
ISO500-K-B509SS304/SS316L55050117 545508.8

Company Profile

Shanghai Hongyu Industrial Co., LTD [RubyVac] was founded in 2007.
RubyVac is an OEM/ODM manufacturer of vacuum components located in ZheJiang, China.  Our primary focus is in the field of high and ultra-high vacuum apparatus for the research and development disciplines as well as semiconductor, aerospace and other practical applications. RubyVac's product line includes industry standard devices and components as well as custom machined products and contract manufacturing.


  • Q
    Q1: Why would I choose you?
    A: We have been engaging in manufacturing vacuum fittings for over 15 years, outstanding in production capacity, effective management, accurate lead time, on-time shipments and problems-solving rate after sales.
  • Q
    Q2: How long is your delivery time?
    A: Generally it is 5-10 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.
  • Q
    Q3: Do you provide samples? Is it free or extra?
    A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
  • Q
    Q4: What is your terms of payment?
    A: Payment<=2000usd, 100% in advance. Payment>2000USD, 30% T/T in advance, balance before shippment.
    For customized products: 50% T/T in advance, balance before shippment.
  • Q
    Q5: Do you accept OEM business?
    A. Yes, we are OEM supplier.

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