APG Hydraulic Seals Catalog

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1-800-888-5223 FAX 1-800-444-3252
Piston Cup Dimensional Data
Homogenous Nitrile
80 Durometer
Part
Number
Outside
Diameter
(inches)
Inside*
Diameter
(inches)
Height
(inches)
Thickness
(inches)
K52 1/2 (S) 1/2 1/32
K67 5/8 (S) 1/2 3/32
K101 1 (S) 1/2 1/8
K125 1-1/4 (S) 1/2 1/8
K138 1-3/8 (S) 7/16 1/8
K152 1-1/2 (S) 1/2 1/8
K176 1-3/4 (S) 1/2 1/8
K204 2 (S) 1/2 1/8
K226 2-1/4 (S) 1/2 1/8
K238 2-3/8 (S) 1/2 1/8
K251 2-1/2 (S) 1/2 1/8
K262 2-5/8 (S) 1/2 1/8
K276 2-3/4 (S) 1/2 1/8
K288 2 7/8 (S) 1/2 1/8
K303 3 (S) 1/2 1/8
K325 3-1/4 (S) 5/8 5/32
K349 3-1/2 (S) 1/2 1/8
K351 3-1/2 (S) 5/8 5/32
K362 3-5/8 (S) 5/8 5/32
K375 3-3/4 (S) 3/4 3/16
K400 4 (S) 3/4 3/16
K402 4 (S) 1/2 1/8
K403 4 (S) 5/8 5/32
K449 4-1/2 (S) 5/8 5/32
K475 4-3/4 (S) 3/4 5/32
K502 5 (S) 3/4 3/16
K550 5-1/2 (S) 3/4 3/16
K603 6 (S) 3/4 3/16
* The “S” in the I.D. column indicates that those items are stocked in a solid
configuration, and any I.D. can be cut at no additional charge.
Note: For availability of additional sizes, please inquire.
Fabric Reinforced
Nitrile
Part
Number
Outside
Diameter
(inches)
Inside*
Diameter
(inches)
Height
(inches)
Thickness
(inches)
K50 1/2 (S) 1/2 1/8
K62 5/8 (S) 9/32 3/32
K77 3/4 (S) 5/16 1/8
K100 1 (S) 1/2 1/8
K102 1 (S) 7/16 3/32
K103 1 (S) 1/4 1/8
K123 1 1/4 (S) 7/16 3/32
K124 1 1/4 (S) 1/2 1/8
K137 1 3/8 (S) 1/2 1/8
K150 1 1/2 (S) 1/2 1/8
K150 - 375 1 1/2 3/8 1/2 1/8
K150 - 750 1 1/2 3/4 1/2 1/8
K163 1 5/8 (S) 1/2 1/8
K174 1 3/4 (S) 1/2 1/8
K175 1 3/4 (S) 1/2 1/8
K203 2 (S) 1/2 1/8
K203 - 375 2 3/8 1/2 1/8
K203 - 500 2 1/2 1/2 1/8
K203 - 625 2 5/8 1/2 1/8
K203 - 750 2 3/4 1/2 1/8
K225 2 1/4 (S) 1/2 1/8
K237 2 3/8 (S) 1/2 1/8
K250 2 1/2 (S) 1/2 1/8
K250 - 375 2 1/2 3/8 1/2 1/8
K250 - 500 2 1/2 1/2 1/2 1/8
K250 - 750 2 1/2 3/4 1/2 1/8
K275 2 3/4 (S) 1/2 1/8
K287 2 7/8 (S) 1/2 1/8
K300 3 (S) 5/8 5/32
K300 - 625 3 5/8 1/2 1/8
K300 - 1000 3 1 5/8 5/32
K300 - 1375 3 1 3/8 5/8 5/32
K300 - 1500 3 1 1/2 5/8 5/32
K300 - 1625 3 1 5/8 5/8 5/32
K302 3 (S) 1/2 1/8
K324 - 875 3 1/4 7/8 5/8 5/32
K327 3 1/4 (S) 5/8 3/16
K327 - 875 3 1/4 7/8 5/8 3/16
K350 3 1/2 (S) 5/8 5/32
K350 - 500 3 1/2 1/2 5/8 5/32
K350 - 750 3 1/2 3/4 5/8 5/32
K353 3 1/2 (S) 1/2 1/8
K376 3 3/4 (S) 5/8 1/8
K401 - 500 4 1/2 5/8 5/32
K401 - 625 4 5/8 5/8 5/32
K401 - 1500 4 1 1/2 5/8 5/32
K404 4 (S) 1/2 1/8
K407 4 (S) 3/4 3/16
K425 4 1/4 (S) 5/8 5/32
K450 4 1/2 (S) 5/8 5/32
K450 - 750 4 1/2 3/4 5/8 5/32
K450 - 2500 4 1/2 2 1/2 5/8 5/32
K503 5 (S) 3/4 3/16
K503 - 1000 5 1 3/4 3/16
K525 5 1/4 (S) 3/4 3/16
K601 6 (S) 3/4 3/16
K601 - 500 6 1/2 3/4 3/16
K601 - 2750 6 2 3/4 3/4 3/16
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