Standards
The Master O-Ring Size Chart: What It Shows, Why It Helps, and Who It Is For
A practical guide to the handbook Master O-Ring Size Chart: multi-standard sizing, nearest-match search, tolerances, back-up rings, and who gets the most from it.
AS568 O-Ring Size Chart (Dash Numbers)
AS568 O-Ring size chart with dash numbers, ID, CS, and OD in inches and millimeters for the 0xx through 4xx series, plus the history of the AS568 standard.
BS 1806 O-Ring Size Chart
BS 1806 British imperial O-Ring size chart with dash numbers aligned to AS568-style series, plus background on BS 1806.
BS 4518 O-Ring Size Chart
BS 4518 British metric O-Ring size chart with ID, CS, and OD in millimeters and inches, plus background on the BS 4518 standard.
O-Ring Cord Tolerances (RMA / ARPM E1, E2, E3)
Cross-sectional tolerance for extruded O-Ring cord: the RMA/ARPM Table 13 and ISO 3302-1 classes E1, E2 and E3 in inch and millimeter, how cord compares to a molded O-Ring, how material and durometer change what a mill can hold, plus sponge and cut length tables.
DIN 3771 O-Ring Size Chart
DIN 3771 German / EU metric O-Ring size chart with ID, CS, and OD in millimeters and inches, plus the history of DIN 3771.
Generic Metric O-Ring Size Chart
Generic metric O-Ring size chart of common tooling ID × CS sizes in millimeters, with OD and inch equivalents.
JIS B 2401 O-Ring Size Chart (S / P / G / V)
JIS B 2401 Japanese O-Ring size chart: S, P, G, and V series with ID, CS, and OD in millimeters and inches, plus the history of the JIS B 2401 standard.
Master O-Ring Size Chart
Filterable multi-standard O-Ring size chart, search by ID or cross-section across AS568, ISO, JIS, BS, DIN and more.
Metric O-Ring Size Chart (ISO 3601)
Metric O-Ring size chart for ISO 3601: ID × CS in millimeters, store CS×ID codes, and OD, plus the history of the ISO 3601 standard.
NF T 47-501 O-Ring Size Chart
NF T 47-501 French metric O-Ring size chart with ID, CS, and OD in millimeters and inches.
Parker 500 Series O-Ring Size Chart
Parker 500 series O-Ring size chart (5-xxx codes) with ID, CS, and OD in inches and millimeters.
O-Ring Size Charts & Standards (AS568 & Metric)
AS568 and metric O-Ring size charts, dash numbers, groove design, and how to measure an existing seal.
SMS 1586 O-Ring Size Chart
SMS 1586 Swedish / Nordic metric O-Ring size chart with ID, CS, and OD in millimeters and inches.
O-Ring Standards & Certifications
O-Ring standards and certifications The O-Ring Store supports: mil-specs, FDA, USP Class VI, 3-A Sanitary, NSF-61, RoHS/REACH, and full lot traceability under ISO 9001:2015.
