![361 Silicone O-Ring, 70A Durometer, Red, 6" ID, 6-3/8" OD, 3/16" Width (Pack of 5): O Ring Seals: Amazon.com: Industrial & Scientific 361 Silicone O-Ring, 70A Durometer, Red, 6" ID, 6-3/8" OD, 3/16" Width (Pack of 5): O Ring Seals: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41+wKT7LliL._AC_.jpg)
361 Silicone O-Ring, 70A Durometer, Red, 6" ID, 6-3/8" OD, 3/16" Width (Pack of 5): O Ring Seals: Amazon.com: Industrial & Scientific
![Ideal Vacuum | ASA 2 Inch Fixed Bored Flange, with O-Ring Groove, Not Rotatable, 6 in OD, 4.75 in BCD, 0.75 in Hole Diameter, 4 holes, 304 Stainless Steel Ideal Vacuum | ASA 2 Inch Fixed Bored Flange, with O-Ring Groove, Not Rotatable, 6 in OD, 4.75 in BCD, 0.75 in Hole Diameter, 4 holes, 304 Stainless Steel](https://www.idealvac.com/files/thumbnails/ASA-2-Grooved-Flange-2in-Bore_P107759_01.jpg)
Ideal Vacuum | ASA 2 Inch Fixed Bored Flange, with O-Ring Groove, Not Rotatable, 6 in OD, 4.75 in BCD, 0.75 in Hole Diameter, 4 holes, 304 Stainless Steel
![Sterling Seal & Supply - O-Rings; Cross Section Shape: Round; Material: Nitrile; Rubber; Material: Nitrile; Rubber; Dash Number: 261; Inside Diameter: 6-3/4; Outside Diameter: 7; Ring Thickness: 1/8; Durometer (Shore A): 90A; Sterling Seal & Supply - O-Rings; Cross Section Shape: Round; Material: Nitrile; Rubber; Material: Nitrile; Rubber; Dash Number: 261; Inside Diameter: 6-3/4; Outside Diameter: 7; Ring Thickness: 1/8; Durometer (Shore A): 90A;](https://cdn.mscdirect.com/global/images/ProductImages/1758778-21.jpg)
Sterling Seal & Supply - O-Rings; Cross Section Shape: Round; Material: Nitrile; Rubber; Material: Nitrile; Rubber; Dash Number: 261; Inside Diameter: 6-3/4; Outside Diameter: 7; Ring Thickness: 1/8; Durometer (Shore A): 90A;
![Ideal Vacuum | ASA 6 Inch Blank Flange with O-Ring Groove, Not Bored, Not Rotatable, 11 in OD, 9.5 BCD, 0.81 in Hole Diameter, 8 Holes, 304 Stainless Steel Ideal Vacuum | ASA 6 Inch Blank Flange with O-Ring Groove, Not Bored, Not Rotatable, 11 in OD, 9.5 BCD, 0.81 in Hole Diameter, 8 Holes, 304 Stainless Steel](https://www.idealvac.com/files/images/6inASA_1aaa_1.jpg)
Ideal Vacuum | ASA 6 Inch Blank Flange with O-Ring Groove, Not Bored, Not Rotatable, 11 in OD, 9.5 BCD, 0.81 in Hole Diameter, 8 Holes, 304 Stainless Steel
![O-Ring, Brown FKM Size: 166, Durometer: 75 Nominal Dimensions: Inner Diameter: 6 14/19(6.737) Inches (17.11198Cm), Outer Diameter: 6 33/35(6.943) Inches (17.63522Cm), Cross Section: 7/68(0.103) Inches (2.62mm) Part Number: OR75BRNVI166 O-Ring, Brown FKM Size: 166, Durometer: 75 Nominal Dimensions: Inner Diameter: 6 14/19(6.737) Inches (17.11198Cm), Outer Diameter: 6 33/35(6.943) Inches (17.63522Cm), Cross Section: 7/68(0.103) Inches (2.62mm) Part Number: OR75BRNVI166](https://cdn11.bigcommerce.com/s-dhkd8q3l5/images/stencil/500x659/products/9288/10618/Brn75VitX__97926.1653683279.jpg?c=2)
O-Ring, Brown FKM Size: 166, Durometer: 75 Nominal Dimensions: Inner Diameter: 6 14/19(6.737) Inches (17.11198Cm), Outer Diameter: 6 33/35(6.943) Inches (17.63522Cm), Cross Section: 7/68(0.103) Inches (2.62mm) Part Number: OR75BRNVI166
![O-Ring Tapes, O-Ring Tape for measuring the inside diameters of o-rings and other soft walled parts, manufactured by Pi Tape Corporation - Newman Tools O-Ring Tapes, O-Ring Tape for measuring the inside diameters of o-rings and other soft walled parts, manufactured by Pi Tape Corporation - Newman Tools](https://www.newmantools.com/gauge/ORT_inside-diameter-o-ring-tapes.jpg)