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)

4444-215 N/A 0.139 N/A 0.004 N/A 1.046 N/A 0.010 N/A 1.324 N/A 1/8 N/A 1 1/16 N/A 1 5/16
4444-216 N/A 0.139 N/A 0.004 N/A 1.109 N/A 0.012 N/A 1.387 N/A 1/8 N/A 1 1/8 N/A 1 3/8
4444-217 N/A 0.139 N/A 0.004 N/A 1.171 N/A 0.012 N/A 1.449 N/A 1/8 N/A 1 3/16 N/A 1 7/16
4444-218 N/A 0.139 N/A 0.004 N/A 1.234 N/A 0.012 N/A 1.512 N/A 1/8 N/A 1 1/4 N/A 1 1/2
4444-219 N/A 0.139 N/A 0.004 N/A 1.296 N/A 0.012 N/A 1.574 N/A 1/8 N/A 1 5/16 N/A 1 9/16
4444-220 N/A 0.139 N/A 0.004 N/A 1.359 N/A 0.012 N/A 1.637 N/A 1/8 N/A 1 3/8 N/A 1 5/8
4444-221 N/A 0.139 N/A 0.004 N/A 1.421 N/A 0.012 N/A 1.699 N/A 1/8 N/A 1 7/16 N/A 1 11/16
4444-222 N/A 0.139 N/A 0.004 N/A 1.484 N/A 0.015 N/A 1.762 N/A 1/8 N/A 1 1/2 N/A 1 3/4
4444-223 N/A 0.139 N/A 0.004 N/A 1.609 N/A 0.015 N/A 1.887 N/A 1/8 N/A 1 5/8 N/A 1 7/8
4444-224 N/A 0.139 N/A 0.004 N/A 1.734 N/A 0.015 N/A 2.012 N/A 1/8 N/A 1 3/4 N/A 2
4444-225 N/A 0.139 N/A 0.004 N/A 1.859 N/A 0.018 N/A 2.137 N/A 1/8 N/A 1 7/8 N/A 2 1/8
4444-226 N/A 0.139 N/A 0.004 N/A 1.984 N/A 0.018 N/A 2.262 N/A 1/8 N/A 2 N/A 2 1/4
4444-227 N/A 0.139 N/A 0.004 N/A 2.109 N/A 0.018 N/A 2.387 N/A 1/8 N/A 2 1/8 N/A 2 3/8
4444-228 N/A 0.139 N/A 0.004 N/A 2.234 N/A 0.020 N/A 2.512 N/A 1/8 N/A 2 1/4 N/A 2 1/2
4444-229 N/A 0.139 N/A 0.004 N/A 2.359 N/A 0.020 N/A 2.637 N/A 1/8 N/A 2 3/8 N/A 2 5/8
4444-230 N/A 0.139 N/A 0.004 N/A 2.484 N/A 0.020 N/A 2.762 N/A 1/8 N/A 2 1/2 N/A 2 3/4
4444-231 N/A 0.139 N/A 0.004 N/A 2.609 N/A 0.020 N/A 2.887 N/A 1/8 N/A 2 5/8 N/A 2 7/8
4444-232 N/A 0.139 N/A 0.004 N/A 2.734 N/A 0.024 N/A 3.012 N/A 1/8 N/A 2 3/4 N/A 3
4444-233 N/A 0.139 N/A 0.004 N/A 2.859 N/A 0.024 N/A 3.137 N/A 1/8 N/A 2 7/8 N/A 3 1/8
4444-234 N/A 0.139 N/A 0.004 N/A 2.984 N/A 0.024 N/A 3.262 N/A 1/8 N/A 3 N/A 3 1/4
4444-235 N/A 0.139 N/A 0.004 N/A 3.109 N/A 0.024 N/A 3.387 N/A 1/8 N/A 3 1/8 N/A 3 3/8
4444-236 N/A 0.139 N/A 0.004 N/A 3.234 N/A 0.024 N/A 3.512 N/A 1/8 N/A 3 1/4 N/A 3 1/2
4444-237 N/A 0.139 N/A 0.004 N/A 3.359 N/A 0.024 N/A 3.637 N/A 1/8 N/A 3 3/8 N/A 3 5/8
4444-238 N/A 0.139 N/A 0.004 N/A 3.484 N/A 0.024 N/A 3.762 N/A 1/8 N/A 3 1/2 N/A 3 3/4
4444-242 N/A 0.139 N/A 0.004 N/A 3.984 N/A 0.028 N/A 4.262 N/A 1/8 N/A 4 N/A 4 1/4
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