SealSpec / O-rings / Size chart / AS568-349

AS568-349 O-ring · 4 1/2 ID × 3/16 cross-section

Standard AS568 size -349: 4.475 in inside diameter × 0.210 in cross-section (113.67 × 5.33 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-349 O-ring dimensioned drawing, 4.475 inch ID by 0.210 inch cross-section, outside diameter 4.895 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-349
Inside diameter	4.475 ± 0.030
Cross-section	0.210 ± 0.005
Outside diameter (calculated)	4.895
Nominal	4 1/2 × 4 7/8 × 3/16

Dimensions (mm)

Inside diameter	113.67 ± 0.76
Cross-section	5.33 ± 0.13
Outside diameter (calc.)	124.33

Material options for -349

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

Check your groove for -349

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 (0.210 in)

-345 3.975 -346 4.100 -347 4.225 -348 4.350 -349 4.475 -350 4.600 -351 4.725 -352 4.850 -353 4.975

← AS568-348 · AS568-350 → · Full size chart