Precision Associates, Inc.
Precision Associates, Inc.
3800 North Washington Ave.
Minneapolis, MN 55412-2142
Toll Free: 1-800-394-6590
Local: +1 612-333-7464
Sales: +1 612-334-9190
Fax: 612-342-2417
Email: [email protected]
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What Makes X-Ring Seals Better?
  • Twice the Sealing Surface - Multi-lobed design provides more sealing surfaces than standard O-Rings.
  • Prolonged Seal Life – With multiple seal points, less squeeze is required to provide an effective seal. Less friction and wear will increase seal life and lower maintenance costs.
  • Prevents Spiral Failure - The “X” profile creates a stable seal that is more resistant to rolling in a groove than an O-Ring when used in a dynamic application.
  • Reduced Leakage - Parting lines of X-Ring seals are located in the valley between the lobes away from the critical sealing surface.
  • Better Lubricant Retention - Grooves on the inside and outside diameter of these rings retain lubricant thereby lowering friction and extending packing life.
  • Less Force, Better Seal - Lower breakaway forces and reduced operating pressures make them ideal in reciprocating applications.
  • The Right Fit - X-Rings will fit in standard O-Ring grooves for most applications.
Pile of X-Ring Seals
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Item #

C/S (inches)

C/S Tolerance (±)

I.D. (inches)

I.D. Tolerance (±)

O.D. (REF) (inches)

Nominal C/S (inches)

Nominal I.D. (inches)

Nominal O.D. (inches)

4444-026 N/A 0.070 N/A 0.003 N/A 1.239 N/A 0.011 N/A 1.379 N/A 1/16 N/A 1 1/4 N/A 1 3/8
4444-027 N/A 0.070 N/A 0.003 N/A 1.301 N/A 0.011 N/A 1.441 N/A 1/16 N/A 1 5/16 N/A 1 7/16
4444-028 N/A 0.070 N/A 0.003 N/A 1.364 N/A 0.013 N/A 1.504 N/A 1/16 N/A 1 3/8 N/A 1 1/2
4444-029 N/A 0.070 N/A 0.003 N/A 1.489 N/A 0.013 N/A 1.629 N/A 1/16 N/A 1 1/2 N/A 1 5/8
4444-030 N/A 0.070 N/A 0.003 N/A 1.614 N/A 0.013 N/A 1.754 N/A 1/16 N/A 1 5/8 N/A 1 3/4
4444-031 N/A 0.070 N/A 0.003 N/A 1.739 N/A 0.015 N/A 1.879 N/A 1/16 N/A 1 3/4 N/A 1 7/8
4444-034 N/A 0.070 N/A 0.003 N/A 2.114 N/A 0.018 N/A 2.254 N/A 1/16 N/A 2 1/8 N/A 2 1/4
4444-042 N/A 0.070 N/A 0.003 N/A 3.239 N/A 0.024 N/A 3.379 N/A 1/16 N/A 3 1/4 N/A 3 3/8
5444-377 N/A 0.071 N/A 0.003 N/A 0.237 N/A 0.004 N/A 0.379 N/A N/A N/A
5444-323 N/A 0.089 N/A 0.003 N/A 0.145 N/A 0.005 N/A 0.323 N/A N/A N/A
5444-403 N/A 0.089 N/A 0.003 N/A .225 N/A 0.005 N/A 0.403 N/A N/A N/A
5444-481 N/A 0.089 N/A 0.003 N/A .303 N/A 0.005 N/A 0.481 N/A N/A N/A
5444-488 N/A 0.094 N/A 0.003 N/A 0.299 N/A 0.005 N/A .487 N/A N/A N/A
4444-102 N/A 0.103 N/A 0.003 N/A 0.050 N/A 0.005 N/A 0.256 N/A 3/32 N/A 1/16 N/A 1/4
4444-103 N/A 0.103 N/A 0.003 N/A 0.081 N/A 0.005 N/A 0.287 N/A 3/32 N/A 3/32 N/A 9/32
4444-104 N/A 0.103 N/A 0.003 N/A 0.112 N/A 0.005 N/A 0.318 N/A 3/32 N/A 1/8 N/A 5/16
4444-105 N/A 0.103 N/A 0.003 N/A 0.143 N/A 0.005 N/A 0.349 N/A 3/32 N/A 5/32 N/A 11/32
4444-106 N/A 0.103 N/A 0.003 N/A 0.175 N/A 0.005 N/A 0.381 N/A 3/32 N/A 3/16 N/A 3/8
4444-107 N/A 0.103 N/A 0.003 N/A 0.206 N/A 0.005 N/A 0.412 N/A 3/32 N/A 7/32 N/A 13/32
4444-108 N/A 0.103 N/A 0.003 N/A 0.237 N/A 0.005 N/A 0.443 N/A 3/32 N/A 1/4 N/A 7/16
4444-109 N/A 0.103 N/A 0.003 N/A 0.299 N/A 0.005 N/A 0.505 N/A 3/32 N/A 5/16 N/A 1/2
4444-110 N/A 0.103 N/A 0.003 N/A 0.362 N/A 0.005 N/A 0.568 N/A 3/32 N/A 3/8 N/A 9/16
5444-610 N/A 0.103 N/A 0.003 N/A .404 N/A 0.005 N/A 0.610 N/A 3/32 N/A N/A
4444-111 N/A 0.103 N/A 0.003 N/A 0.424 N/A 0.005 N/A 0.630 N/A 3/32 N/A 7/16 N/A 5/8
4444-112 N/A 0.103 N/A 0.003 N/A 0.487 N/A 0.005 N/A 0.693 N/A 3/32 N/A 1/2 N/A 11/16
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