Centering Ring Assemblies With Screen

Screen mesh centering ring assemblies are useful in situations in which a vacuum system or instrument needs to be protected from contamination by particulate generated from outside the system or from within. The supportive metallic ring for these seals has a screen mesh insert covering the inner aperture.


  • High Vacuum Rated to 1×10-8 Torr
  • Compatible with all ISO standard vacuum flanges
  • Reusable
  • Quick sealing and disassembly


  • Centering Ring:
    • Standard: 316 Stainless steel
  • O-Ring:
    • Standard: FKM
    • Alternative: Buna or Silicone (Contact us for price and delivery)

Options (Contact us for price and delivery)

  • Larger sizes

Product Notes

  • Metal centering ring aligns flanges during seal assembly and provides support for the elastomer sealing ring
  • Replaceable O-ring

*Dimensions are in inches unless otherwise specified

Part IDReference NumberA B Figure 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID4000050Reference NumberQF16-CTR-SM-VTA 0.51B 0.21Figure 13D CADLoginDrawingLoginUnit Price$31.00Contact
Part ID4000051Reference NumberQF25-CTR-SM-VTA 0.86B 0.21Figure 13D CADLoginDrawingLoginUnit Price$34.20221
Part ID4000052Reference NumberQF40-CTR-SM-VTA 1.45B 0.21Figure 13D CADLoginDrawingLoginUnit Price$42.6031
Part ID4000053Reference NumberQF50-CTR-SM-VTA 1.88B 0.21Figure 13D CADLoginDrawingLoginUnit Price$44.55Contact
Part ID4500341Reference NumberLF63-CTR-SM-VTA 2.48B 0.154Figure 23D CADLoginDrawingLoginUnit Price$228.0027
Part ID4500342Reference NumberLF80-CTR-SM-VTA 3.03B 0.154Figure 23D CADLoginDrawingLoginUnit Price$270.0060
Part ID4500343Reference NumberLF100-CTR-SM-VTA 3.8B 0.154Figure 23D CADLoginDrawingLoginUnit Price$326.005
Part ID4500344Reference NumberLF160-CTR-SM-VTA 5.67B 0.154Figure 23D CADLoginDrawingLoginUnit Price$350.0016