SealSpec / O-rings / Size chart / AS568-444

AS568-444 O-ring · 7 3/4 ID × 1/4 cross-section

Standard AS568 size -444: 7.725 in inside diameter × 0.275 in cross-section (196.22 × 6.99 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-444 O-ring dimensioned drawing, 7.725 inch ID by 0.275 inch cross-section, outside diameter 8.275 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-444
Inside diameter	7.725 ± 0.045
Cross-section	0.275 ± 0.006
Outside diameter (calculated)	8.275
Nominal	7 3/4 × 8 1/4 × 1/4

Dimensions (mm)

Inside diameter	196.22 ± 1.14
Cross-section	6.99 ± 0.15
Outside diameter (calc.)	210.19

Material options for -444

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

Check your groove for -444

Enter your gland dimensions. Results are nominal geometry.

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

Open the full groove calculator →

Same cross-section (0.275 in)

-440 6.725 -441 6.975 -442 7.225 -443 7.475 -444 7.725 -445 7.975 -446 8.475 -447 8.975 -448 9.475

← AS568-443 · AS568-445 → · Full size chart