Name: FRS8863A-BX
SKU: FRS8863A-BX

Find the O-Ring for Your Groove

Measured a groove with calipers? Enter the inside diameter, outside diameter, depth, and width. We’ll show the O-ring size(s) that fit — squeeze, gland fill, and stretch checked against industry design rules — and what to do when it’s not a standard size.

What kind of seal is it?

Groove cut around a piston or shaft; the O-ring is squeezed between the groove bottom and the bore wall. Not sure? Piston/shaft is the most common — pick it and adjust.

Motion & units

Piston / shaft groove — the O-ring is squeezed between the groove bottom and the bore wall. Tap a field below and its dimension lights up.

Your measured groove (fill in what you have — depth fills itself from ID & OD)

Groove ID

Smaller of the two diameters.

Groove OD

Larger of the two diameters.

Groove Depth

Radial depth. Auto = (OD−ID)÷2.

Groove Width

Axial width of the groove.

The finder uses published O-ring design rules — target squeeze (judged by cross-section), gland-fill, and stretch. Inch (AS568) sizes follow the Parker O-Ring Handbook ORD 5700 tables; metric sizes follow ISO 3601-2 (Housing dimensions), with off-standard cross-sections shown as general guidance. Sizes are matched against Global O-Ring’s stocked AS568 and metric sizes. Results are a starting point; final selection should account for tolerances, fluid/thermal swell, pressure, and material. Want a person to confirm it? Request a quote or call 832-448-5550 — most of what we sell is in stock in Houston.

O-Ring Groove Design Calculator

Pick an AS568 series and a groove type — get gland depth, squeeze, width, gap, and corner radii instantly. All values in inches.

Static radial gland — designed clearance gap, no motion.

Groove / Gland Type

What do these mean? See the groove design guide →

Cross-Section Series

Target groove ID (optional)

Nearest stocked AS568 dash in this series — with a machine-to-fit tip if your ID is off-standard.

Design Validator

Real-time checks against the methodology described further down this page — compression-ratio extremes, extrusion-pressure limits, and concentric clearance.

Compression Check

Squeeze at nominal dimensions and at both tolerance extremes. Each value is checked against the published squeeze range for the selected series and groove type.

Extrusion / Pressure Check

Enter your application pressure, durometer, and clearance gap. The calculator returns the max safe pressure for that combination (Parker EB-1010 limits) and whether your design fits.

Working Pressure

psi

O-Ring Durometer

Diametric Clearance Gap

Concentricity / Clearance Helper

No measured clearance handy? Enter bore and shaft/piston diameters. Assume all clearance can shift to one side — the full diametric clearance is what the extrusion check needs.

Bore ID

Shaft / Piston OD

Extrusion-pressure limits derived from the Parker O-Ring Handbook (ORD 5700 / EB-1010). Values assume continuous pressure at room temperature on elastomeric compounds (Buna-N, FKM/Viton, EPDM). For FFKM, PTFE, polyurethane, high-temperature service, pulsing pressure, or Rapid Gas Decompression, request engineering review.

Sources & standards. Inch gland dimensions and squeeze ranges follow the Parker O-Ring Handbook (ORD 5700) and SAE AS4716: static glands per Design Chart 4-2, face seals per Design Chart 4-3, dovetail glands per the dovetail charts, and dynamic glands per the ORD 5700 reciprocating-seal tables. Cross-section sizes & tolerances per SAE AS568 and ISO 3601-1; metric housing per ISO 3601-2. Extrusion limits per ORD 5700 / Parker EB-1010.
Values are a starting point — the final design must account for tolerance extremes, fluid swell, thermal expansion, and concentricity. Request a quote or call 832-448-5550.

FABRIC REINFORCED OIL SEAL
A STYLE, NITRILE
SHAFT: 2.437 IN (61.90 MM)
BORE: 3.481 IN (88.42 MM)
WIDTH: 0.500 IN (12.70 MM)

FRS8863A-BX

Quantity Pricing (ea)

1 for $34.90

Stock & Availability (ea)

In Stock: 0

Inbound Stock: 0

Offsite Stock: 0 ($100 Line Min)

New Production: Unlimited ($100 Line Min)

Expedited Shipping*: 07/21/2026

Standard Shipping: 07/21/2026

*Add your desired qty and click ADD TO CART to see expedite fees and options.

追加情報

重さ	0.08737 lbs (ポンド)
Shipping Dimensions	3.481 × 3.481 × 0.5 in (インチ)
Material	Nitrile
Size	8863
Style	A
Minimum Temperature	-30
Maximum Temperature	100
Maximum Speed	10
Maximum Pressure	0.5

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Find the O-Ring for Your Groove