SealSpec / O-rings / Size chart / AS568-020

AS568-020 O-ring · 7/8 ID × 1/16 cross-section

Standard AS568 size -020: 0.864 in inside diameter × 0.070 in cross-section (21.95 × 1.78 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-020 O-ring dimensioned drawing, 0.864 inch ID by 0.070 inch cross-section, outside diameter 1.004 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-020
Inside diameter	0.864 ± 0.009
Cross-section	0.070 ± 0.003
Outside diameter (calculated)	1.004
Nominal	7/8 × 1 × 1/16

Dimensions (mm)

Inside diameter	21.95 ± 0.23
Cross-section	1.78 ± 0.08
Outside diameter (calc.)	25.50

Material options for -020

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

Check your groove for -020

Enter your gland dimensions. Results are nominal geometry.

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

Open the full groove calculator →

Same cross-section (0.070 in)

-016 0.614 -017 0.676 -018 0.739 -019 0.801 -020 0.864 -021 0.926 -022 0.989 -023 1.051 -024 1.114

← AS568-019 · AS568-021 → · Full size chart