SAME DAY SHIPPING
— Order by 2pm EST.
Toggle Nav
Cart
Search
main product photo

O-Ring for Bump Tube O-Ring Seal Fitting, -08 Size

Ask A Question

Description & Features

The Danfoss / Eaton Spare Part O-Ring is designed for reliable performance in industrial applications.

Manufactured by Danfoss Power Solutions (II LLC Aeroquip), this O-Ring features an internal diameter of 0.426 inches and an external diameter of 0.551 inches. Its -08 size and HNBR material construction, with a 70 durometer hardness, ensure durability and a temperature range from -25 to +300 degrees Fahrenheit.

This O-Ring is specifically intended for use with bump tube O-Ring seal fittings, helping maintain system integrity under various temperature conditions.

Notably, this O-Ring does not require thread sealant.

Segment Code: seg_code_a

MPN: FF90178-13

Supplier Part Number: FF90178-13

Specifications

Brand
Aeroquip® by Danfoss
Color
Green
Dash Size
08
Fitting Type
O-ring
For Use With
EZ Clip System Bump Tube O-ring Seals and O-ring Pilot Fittings
Inside Diameter
0.426 in
Material
Nitrile
Material Construction
HNBR
Size
1/2 in
Suitable For Use With
EZ Clip System Bump Tube O-ring Seals and O-ring Pilot Fittings
Width e Dimensions
1/16 in

Similar Products

Model Number Dash Size Materials Temperature Range I.D. Width (E) O.D. Price Action
O-Ring for Bump Tube O-Ring Seal Fitting, -06 Size

FF90178-11 Bump Tube ORS Fitting O-Ring

-06

HNBR (70 durometer)

-25 to +300

0.301 in

0.0625

0.426 in

O-Ring for Bump Tube O-Ring Seal Fitting, -10 Size

FF90178-15 Bump Tube ORS Fitting O-Ring

-10

HNBR (70 durometer)

-25 to +300

0.551 in

0.0625

0.676 in

O-Ring for Bump Tube O-Ring Seal Fitting, -12 Size

FF90178-17 Bump Tube ORS Fitting O-Ring

-12

HNBR (70 durometer)

-25 to +300

0.676 in

0.0625

0.801 in

Product Questions & Answers (4)

Question by: Duane H on Jan 8, 2026, 8:14 AM
what kind of heat can these o rings take before they fail. we run some pretty hot lines
Answer by: Customer Support on Jan 10, 2026, 6:26 AM
Temperatures up to 300 degrees Fahrenheit are safely handled by the 70 durometer HNBR material. The working range on these goes from -25 all the way up to that +300 mark.
Question by: Hank B on May 31, 2025, 3:54 PM
got a bump tube o-ring seal fitting that takes an -08, is this the right o-ring size?
Answer by: Customer Support on Jun 2, 2025, 6:00 AM
The key callouts are the dash size and the ring dimensions. This one is a -08 O-ring with a 0.426 inch ID, 0.551 inch OD, and 0.0625 inch width, listed for bump tube O-ring seal fittings.
Question by: Phil W on Sep 12, 2025, 7:12 AM
What size is this O-ring? Just want to make sure it'll fit the fitting I have.
Answer by: Customer Support on Sep 14, 2025, 7:00 AM
It's a -08 size, so it'll fit any standard -08 bump tube O-ring seal fitting.
Question by: Connie O on Oct 14, 2025, 9:04 AM
what temp range does this o-ring hold up to? got a system that sees some pretty cold mornings and hot afternoons
Answer by: Customer Support on Oct 15, 2025, 9:59 AM
Rated from -25 up to 300 degrees Fahrenheit, so swings between cold startups and heat buildup during operation fall well within what this o-ring can handle. The HNBR material holds its shape and seal across that full range without needing any thread sealant applied during installation.

Tell us what you need and we'll get back to you.

Fields marked * are required.