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AFLAS O-rings
overnight
   
Seals Eastern, Inc.
O-rings, Large Diameter
designed and manufactured for the
most demanding applications.

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Large Diameter Orings of High Performance Elastomers to Precise Tolerances

Seals Eastern manufactures close tolerance rubber o-rings to customer specification and recognized standards such as AS568, BS1806, and JIS. 

We specialize in o-rings molded using high performance elastomers such as Aflas ®, Viton ®, HNBR, FFKM (Perflas ®), Fluorosilicone, and other synthetic polymers. Visit our MATERIALS section on the left hand navigation bar to learn more.

  • Standard O-rings AS-568A, JIS, and BS standard o-rings in addition to any non-standard o-ring of specialty high performance rubber. We mold using individual insert cavities for the tightest tolerance on parting lines available. We specialize in o-rings for - Large Diameter O-rings are made using precision molded oring cord of .103, .139, .210, .224, .275, .375, and .500 inch cross-section.
    - O-rings overnight visit OringOnline® for our available supply of Aflas ® and Viton ® O-rings.
  • Custom Molded Orings - We are able to manufacture any o-ring design to customer specification.

Standard AS568 O-rings whose ID is greater than 12 inches are listed by nominal ID (inches), cross-section ("C/S"), the dash number, and actual ID (inches).
ID C/S 1/8" (.139) C/S 3/16" (.210) C/S 1/4" (.275)
12" 2-278 , (11.984") 2-381 , (11.975") 2-453 , (11.975")
12.5"     2-454 , (12.475")
13" 2-279 , (12.984") 2-382 , (12.975") 2-455 , (12.975")
13.5" 2-456 , (13.475")
14" 2-280 , (13.984") 2-383 , (13.975") 2-457 , (13.975")
14.5" 2-458 , (14.475")
15" 2-281 , (14.984") 2-384 , (14.975") 2-459 , (14.975")
15.5" 2-460 , (15.475")
16" 2-282 , (15.955") 2-385 , (15.955") 2-461 , (15.955")
16.5" 2-462 , (16.455")
17" 2-283 , (16.955") 2-386 , (16.955") 2-463 , (16.955")
17.5" 2-464 , (17.455")
18" 2-284 , (17.955") 2-387 , (17.955") 2-465 , (17.955")
18.5" 2-466 , (18.455")
19" 2-388 , (18.953") 2-467 , (18.955")
19.5" 2-468 , (19.455")
20" 2-389 , (19.953") 2-469 , (19.955")
21" 2-390 , (20.953")* 2-470 , (20.955")*
22" 2-391 , (21.953")* 2-471 , (21.955")*
23" 2-392 , (22.940") 2-472 , (22.940")*
24" 2-393 , (23.940")* 2-473 , (23.940")*
25" 2-394 , (24.940")* 2-474 , (24.940")*
26" 2-395 , (25.940") 2-475 , (26.940")

SEALS EASTERN
MOLDING SUCCESS FOR 50 YEARS.




 

FastDash ™ is a trademark of Seals Eastern, Inc.; OringOnline ® is a registered trademark of Seals Eastern, Inc.; 7182 ™ is a trademark of Seals Eastern, Inc.; AFLAS ® is a registered trademark of Asahi Glass Co., Ltd.; Viton ® is a registered trademark of Dupont Performance Elastomers, LLC.