SealSpec / O-rings / Size chart / AS568-166

AS568-166 O-ring · 6 3/4 ID × 3/32 cross-section

Standard AS568 size -166: 6.737 in inside diameter × 0.103 in cross-section (171.12 × 2.62 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-166 O-ring dimensioned drawing, 6.737 inch ID by 0.103 inch cross-section, outside diameter 6.943 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-166
Inside diameter	6.737 ± 0.040
Cross-section	0.103 ± 0.003
Outside diameter (calculated)	6.943
Nominal	6 3/4 × 6 15/16 × 3/32

Dimensions (mm)

Inside diameter	171.12 ± 1.02
Cross-section	2.62 ± 0.08
Outside diameter (calc.)	176.35

Material options for -166

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

Check your groove for -166

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

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Same cross-section (0.103 in)

-162 5.737 -163 5.987 -164 6.237 -165 6.487 -166 6.737 -167 6.987 -168 7.237 -169 7.487 -170 7.737

← AS568-165 · AS568-167 → · Full size chart