SealSpec / O-rings / Size chart / AS568-316

AS568-316 O-ring · 7/8 ID × 3/16 cross-section

Standard AS568 size -316: 0.850 in inside diameter × 0.210 in cross-section (21.59 × 5.33 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-316 O-ring dimensioned drawing, 0.850 inch ID by 0.210 inch cross-section, outside diameter 1.270 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-316
Inside diameter	0.850 ± 0.010
Cross-section	0.210 ± 0.005
Outside diameter (calculated)	1.270
Nominal	7/8 × 1 1/4 × 3/16

Dimensions (mm)

Inside diameter	21.59 ± 0.25
Cross-section	5.33 ± 0.13
Outside diameter (calc.)	32.26

Material options for -316

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

Check your groove for -316

Enter your gland dimensions. Results are nominal geometry.

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

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Same cross-section (0.210 in)

-312 0.600 -313 0.662 -314 0.725 -315 0.787 -316 0.850 -317 0.912 -318 0.975 -319 1.037 -320 1.100

← AS568-315 · AS568-317 → · Full size chart