SealSpec / O-rings / Size chart / AS568-018

AS568-018 O-ring · 3/4 ID × 1/16 cross-section

Standard AS568 size -018: 0.739 in inside diameter × 0.070 in cross-section (18.77 × 1.78 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-018 O-ring dimensioned drawing, 0.739 inch ID by 0.070 inch cross-section, outside diameter 0.879 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-018
Inside diameter	0.739 ± 0.009
Cross-section	0.070 ± 0.003
Outside diameter (calculated)	0.879
Nominal	3/4 × 7/8 × 1/16

Dimensions (mm)

Inside diameter	18.77 ± 0.23
Cross-section	1.78 ± 0.08
Outside diameter (calc.)	22.33

Material options for -018

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

Check your groove for -018

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 (0.070 in)

-014 0.489 -015 0.551 -016 0.614 -017 0.676 -018 0.739 -019 0.801 -020 0.864 -021 0.926 -022 0.989

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