SealSpec / O-rings / Size chart / AS568-161

AS568-161 O-ring · 5 1/2 ID × 3/32 cross-section

Standard AS568 size -161: 5.487 in inside diameter × 0.103 in cross-section (139.37 × 2.62 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-161 O-ring dimensioned drawing, 5.487 inch ID by 0.103 inch cross-section, outside diameter 5.693 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-161
Inside diameter	5.487 ± 0.035
Cross-section	0.103 ± 0.003
Outside diameter (calculated)	5.693
Nominal	5 1/2 × 5 11/16 × 3/32

Dimensions (mm)

Inside diameter	139.37 ± 0.89
Cross-section	2.62 ± 0.08
Outside diameter (calc.)	144.60

Material options for -161

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

Check your groove for -161

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 (0.103 in)

-157 4.487 -158 4.737 -159 4.987 -160 5.237 -161 5.487 -162 5.737 -163 5.987 -164 6.237 -165 6.487

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