Double Claw Clamp

Claw clamps require the use of more than one clamp per flange connection. They require more work per seal assembly, but offer greater strength than the quick clamp if the seal assembly must bear a lateral load. They are traditionally the most popular clamps for ISO sizes LF63 and larger. These clamps are the only clamps capable of sealing sizes LF250 to LF500.



  • High vacuum rated to 1×10-8 Torr
  • Compatible with all ISO standard vacuum flanges and fittings



  • Body: Aluminum
  • Hardware (bolts and washers): Stainless Steel


Product Notes

  • Fastens ISO-LF flanges


Options (Contact us for price and delivery)

  • Stainless steel clamp body

*Dimensions are in inches unless otherwise specified

Part IDReference NumberA B C Flange Size 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID4500000Reference NumberLF63/100-DCCA 0.96B 1.99C 0.66Flange Size 63 / 80 / 1003D CADLoginDrawingLoginUnit Price$6.951
Part ID4500001Reference NumberLF160/250-DCCA 1.10B 2.05C 0.80Flange Size 160 / 200 / 2503D CADLoginDrawingLoginUnit Price$7.50108
Part ID4500002Reference NumberLF320/500-DCCA 1.34B 2.56C 1.04Flange Size 320 / 400 / 5003D CADLoginDrawingLoginUnit Price$14.5029