SealSpec / O-rings / Size chart / AS568-143

AS568-143 O-ring · 2 7/16 ID × 3/32 cross-section

Standard AS568 size -143: 2.425 in inside diameter × 0.103 in cross-section (61.60 × 2.62 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-143 O-ring dimensioned drawing, 2.425 inch ID by 0.103 inch cross-section, outside diameter 2.631 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-143
Inside diameter	2.425 ± 0.020
Cross-section	0.103 ± 0.003
Outside diameter (calculated)	2.631
Nominal	2 7/16 × 2 5/8 × 3/32

Dimensions (mm)

Inside diameter	61.60 ± 0.51
Cross-section	2.62 ± 0.08
Outside diameter (calc.)	66.83

Material options for -143

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

Check your groove for -143

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)

-139 2.175 -140 2.237 -141 2.300 -142 2.362 -143 2.425 -144 2.487 -145 2.550 -146 2.612 -147 2.675

← AS568-142 · AS568-144 → · Full size chart