AS568-214 FFKM O-ring: size, grades and quote
Short answer: an AS568-214 O-ring has a 24.99 ± 0.25 mm (0.984 in) inside diameter and a 3.53 ± 0.10 mm (0.139 in) cross section. In FFKM it is priced by quotation only: the price depends on the FFKM grade and the quantity, so request a quote with your process and quantity.
MST quotes AS568-214 in FFKM grades such as Greene Tweed Chemraz 513 and MORISEAL Morisz, from a single ring upward.
AS568-214 dimensions
| Parameter | Inch | Millimetre |
|---|---|---|
| Inside diameter (ID) | 0.984 ± 0.010 | 24.99 ± 0.25 |
| Cross section (CS) | 0.139 ± 0.004 | 3.53 ± 0.10 |
| Outside diameter (reference, ID + 2 × CS) | 1.262 | 32.05 |
The -2xx series shares the 3.53 mm cross section; -014 and -114 are different rings.
FFKM grades quoted in AS568-214
| Grade | Manufacturer | Temperature | Hardness | Published application |
|---|---|---|---|---|
| Chemraz 513 | Greene Tweed | 210 °C reference limit | 80 Shore A typical | Semiconductor dry process |
| Morisz 5130UP | MORISEAL | −5 to 250 °C | 80 ± 5 HA | Dynamic sealing in plasma |
| Morisz 6880SZ | MORISEAL | 0 to 315 °C | 80 ± 5 HA | High-temperature plasma under mechanical stress |
| Morisz N65 | MORISEAL | 0 to 330 °C | 75 ± 5 HA | Plasma sealing at elevated temperature |
| Morisz ST50I | MORISEAL | −45 to 200 °C | 65 ± 5 HA | Low-temperature sealing |
How to get a price
- Open the AS568-214 FFKM page and press Request a quote.
- Enter your email and the quantity, from 1 piece.
- Add the process gases, peak seal temperature and the grade you use now, if any.
- MST replies by email with the grade, price and lead time.
Frequently asked questions
How much does an AS568-214 FFKM O-ring cost?
It is quoted on request. The price depends on the FFKM grade and the quantity; request a quote on the AS568-214 FFKM page with your email and quantity.
What size is AS568-214?
Inside diameter 24.99 ± 0.25 mm (0.984 in), cross section 3.53 ± 0.10 mm (0.139 in), reference outside diameter 32.05 mm.
Can I order a single AS568-214 FFKM O-ring?
Yes, you can request a quote from 1 piece. Minimum order and packing quantity are stated in the quote.
Which FFKM grade should I pick for AS568-214?
Pick by process: Morisz 6880SZ or N65 for high-temperature plasma, Morisz 5130UP for dynamic plasma contact, Chemraz 513 for semiconductor dry process, Morisz ST50I for low temperature.
Is AS568-214 the same as 2-214?
Yes. 2-214 is the common shorthand for the AS568-214 dash size.
Request a quote
Enter your email and quantity. MST replies with the FFKM grade, price and lead time for AS568-214.
Request a quoteRelated pages
Sources
- SAE AS568 aerospace size standard for O-rings
- Parker O-Ring Handbook ORD 5700
- MORISEAL product centre
- Greene Tweed Chemraz 513 listing
Values are taken from the manufacturer documents above, checked 2026-10-26. Specifications can change; confirm against the current datasheet before ordering. MST is a distributor; products are made by the manufacturers named.