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The AS568 series is the standard o-ring size list that most mechanical drawings reference, and the full set of moulds for those sizes is held in house. That means AS568 standard parts can be supplied promptly and conveniently rather than waiting for tooling to be cut for a size that already exists in the standard. The rings serve machine tools, agricultural machinery, instrumentation, construction machinery, automobiles, ships, aerospace equipment, engineering machinery, chemical machinery, mining machinery, plastic machinery and petroleum machinery, which is close to the whole span of mechanical equipment. The series is also listed as AS568 O-RING, AS568 O RING and AS568 ORING, so a search under any of those spellings lands on the same size table.
Holding all AS568 moulds removes the tooling wait that normally sits at the front of an o-ring order
Ordering by AS568 dash number stops the dimensional errors that come from converting a size by hand
A standard size list makes it straightforward to second source a ring already used in your equipment
One size family covers machine tool hydraulic and mobile equipment so a stores catalogue can be simplified
Standard parts available promptly help when a machine is down and a specific size is missing
Waiting for a mould to be cut for a size that already exists in the AS568 standard delays the order
Hand converting a ring size from a worn sample introduces errors that show up as leaks
Non standard sizes are hard to re-source later when the original supplier changes
Mixed equipment fleets carry too many one-off ring sizes in stores
Equipment sitting idle while a common standard size is sourced
| Size Standard | AS568 series |
|---|---|
| Tooling | All moulds for the AS568 o-ring size range held in house |
| Naming Variants | AS568 O-RING AS568 O RING AS568 ORING |
| Applications | Machine tools agricultural machinery instrumentation construction machinery automobiles ships aerospace equipment engineering machinery chemical machinery mining machinery plastic machinery petroleum machinery |
Figures shown are taken from the supplying factory documentation. Anything not listed here is confirmed in writing before order.
An AS568 size can be produced from existing tooling rather than waiting for a new mould
AS568 suits drawings and equipment built to the inch based standard so no conversion is needed
Ordering by dash number reproduces the original design dimension rather than the compressed one
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View Details →Yes. All the moulds for the AS568 o-ring size range are held, which is why standard parts of the series can be supplied promptly.
Machine tools, agricultural machinery, instrumentation, construction machinery, automobiles, ships, aerospace equipment, engineering machinery, chemical machinery, mining machinery, plastic machinery and petroleum machinery.
Yes. The AS568 dimension stays fixed and the compound is selected for the medium and temperature you describe.
Non standard sizes are made to your drawing. Those need their own tooling, which is quoted separately from the standard series.
Give the AS568 dash number plus the compound and hardness. That is enough to fix the part.
Because the moulds are already held, standard sizes move faster than custom ones, and the exact lead time is confirmed in writing with the quotation.
Send the drawing, capacity or duty cycle you need and we will come back with the factory match, the build detail and the commercial terms.
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