SealSpec / O-rings / Size chart / AS568-225

AS568-225 O-ring · 1 7/8 ID × 1/8 cross-section

Standard AS568 size -225: 1.859 in inside diameter × 0.139 in cross-section (47.22 × 3.53 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-225 O-ring dimensioned drawing, 1.859 inch ID by 0.139 inch cross-section, outside diameter 2.137 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-225
Inside diameter	1.859 ± 0.018
Cross-section	0.139 ± 0.004
Outside diameter (calculated)	2.137
Nominal	1 7/8 × 2 1/8 × 1/8

Dimensions (mm)

Inside diameter	47.22 ± 0.46
Cross-section	3.53 ± 0.10
Outside diameter (calc.)	54.28

Material options for -225

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

Check your groove for -225

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 (0.139 in)

-221 1.421 -222 1.484 -223 1.609 -224 1.734 -225 1.859 -226 1.984 -227 2.109 -228 2.234 -229 2.359

← AS568-224 · AS568-226 → · Full size chart