SealSpec / O-rings / Size chart / AS568-439

AS568-439 O-ring · 6 1/2 ID × 1/4 cross-section

Standard AS568 size -439: 6.475 in inside diameter × 0.275 in cross-section (164.47 × 6.99 mm). Dimensions, tolerances, groove check and material options for specifying this size in a production design.

AS568-439 O-ring dimensioned drawing, 6.475 inch ID by 0.275 inch cross-section, outside diameter 7.025 inch — Dimensioned drawing, proportional to ID/CSDownload SVG

Dimensions (inch)

Dash number	AS568-439
Inside diameter	6.475 ± 0.040
Cross-section	0.275 ± 0.006
Outside diameter (calculated)	7.025
Nominal	6 1/2 × 7 × 1/4

Dimensions (mm)

Inside diameter	164.47 ± 1.02
Cross-section	6.99 ± 0.15
Outside diameter (calc.)	178.43

Material options for -439

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

Check your groove for -439

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

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Same cross-section (0.275 in)

-435 5.725 -436 5.850 -437 5.975 -438 6.225 -439 6.475 -440 6.725 -441 6.975 -442 7.225 -443 7.475

← AS568-438 · AS568-440 → · Full size chart