SealSpec / O-rings / Size chart / AS568-445

AS568-445 O-ring · 8 ID × 1/4 cross-section

Standard AS568 size -445: 7.975 in inside diameter × 0.275 in cross-section (202.57 × 6.99 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-445 O-ring dimensioned drawing, 7.975 inch ID by 0.275 inch cross-section, outside diameter 8.525 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-445
Inside diameter	7.975 ± 0.045
Cross-section	0.275 ± 0.006
Outside diameter (calculated)	8.525
Nominal	8 × 8 1/2 × 1/4

Dimensions (mm)

Inside diameter	202.57 ± 1.14
Cross-section	6.99 ± 0.15
Outside diameter (calc.)	216.53

Material options for -445

Viton / FKM Nitrile / Buna-N EPDM Silicone Fluorosilicone Neoprene

Check your groove for -445

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Groove depth (in)Groove width (in)Installed ID / rod (in)

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Same cross-section (0.275 in)

-441 6.975 -442 7.225 -443 7.475 -444 7.725 -445 7.975 -446 8.475 -447 8.975 -448 9.475 -449 9.975

← AS568-444 · AS568-446 → · Full size chart