AS568 O-Ring Index | 000–475

Card-based index by cross-section series—skip long tables, jump straight to the spec you need.

Tools & downloads

Download full specs (CSV)

All 200+ sizes for quick filtering.

Open calculator

Groove and compression calculator.

Submit size table

Upload list; we map sizes/materials.

Complete AS568 Coverage

Full 000–475 catalog; cross-sections 0.070"–0.275" grouped by series for fast navigation and linking.

Material pairing by media

Hydraulic/fuel: NBR, HNBR, FKM. Chemicals/high temp: FFKM, PTFE. Steam/hot water: EPDM. Food/clean: platinum silicone.

Design best practices

Static squeeze 15–25%, dynamic 10–20%; PTFE backups for high pressure; surface finish 8–32 μin Ra; use AS568 groove tolerances.

AS568 deep guidance

Extended copy below focuses on dash coverage, groove design, material pairings, submission workflow, and shipment records so engineering and sourcing read the same facts.

Dash coverage anchored to inventory

Every AS568 dash size inside this hub is tied to actual bins, not just a PDF. We track how many o ring pieces remain for each combination of cross-section, ID, and material so you know whether AS568-110 in 70A NBR can ship today or needs a short molding run.

When you request AS568-214 or AS568-325 sets, we look at the stack of related dash sizes and suggest which companion rings you might need for piston, rod, or face seals. That keeps the cart full enough for a rebuild without forcing you to submit separate forms.

Because we keep the entire 000–475 range online, you can mix thin series rings with large cross-section parts in one submission. The form tags each line with dash number, media, and preferred material so our team can pick from the correct aisle and show you the exact stretch or squeeze value we are using.

Groove and tolerance guardrails

We maintain the AS568 groove data directly in this theme, which means your quote response includes width, depth, and corner radii suggestions. When you note a machining tolerance, we overlay it on the standard groove to show where an o-ring might pinch or roll.

Large ID and big cross-section rings are sensitive to storage and packaging. We specify the reel size, recommended stretch percentages during installation, and the number of operators needed so your team does not twist the o rings when dropping them into oversized grooves.

If you send custom groove dimensions, we run them through the calculator and return screenshots showing squeeze percentages and gland fill. That keeps the conversation factual and makes it easy to defend design decisions internally.

Material pairing for AS568 numbers

Most hydraulic and fuel customers pair Series 1 and Series 2 dash sizes with NBR or HNBR. We confirm compatibility with diesel, phosphate ester, or bio-fluid so you can stock one material instead of juggling partial kits.

For hot chemical loops or vacuum service, we outline whether Viton, FKM blends, PTFE, or FFKM should be the default. The answer references the specific dash numbers you listed, plus any PTFE backup rings that are already in inventory.

When you need compliance for food or pharma equipment, we match the AS568 codes with platinum silicone or FDA-grade materials and attach packaging photos. That way your QA group sees the bagging method, lot numbers, and storage clock before approving the purchase.

Submission-to-response workflow

Upload your dash list through the hero form or attach a spreadsheet. The system tags it with project name, industry, and requested ship date so our team knows how to prioritize the pull.

Within 24 hours we respond with available inventory, alternates, and any molding timelines. Every line shows the dash number, quantity on hand, size tolerance, and the material-grade summary so maintenance techs can order without a meeting.

All submissions stay archived inside the AS568 hub so the next engineer can review previous kits, packaging choices, and shipment IDs. It keeps procurement, maintenance, and QA in sync even if the project pauses for months.

Shipping, labeling, and QA notes

Each outbound kit carries labels with dash numbers, lot tracking, cure dates, and a short note describing the intended media. We can include a CSV copy inside the box if you want a physical manifest.

We break large orders into manageable cartons with clear dividers so rings do not deform. Photo proof is shared through the portal, and we keep the same photos attached to your record in case auditors ask for documentation.

If you request installation aids such as go-no-go gauges, printed AS568 charts, or PTFE backup rings, we add them before sealing the carton. That keeps your technicians focused on the rebuild rather than running around for missing parts.