Pneu-Draulics, Inc
Pneu-Draulics, Inc
111 Brookside Drive
Nicholasville, Ky 40356
United States
Phone: 1-800-333-7325 (SEAL)
E-Mail: info@pneu-draulics.com
Website: www.pneu-draulics.com
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These are typically used in piston applications to create a tight seal between the moving parts and the cylinder wall. Ideal for use in high-pressure and high-temperature environments.
Cast Iron Piston Rings
Unit of Measure
1 2 3 4 

Item #

Item Description

Outside Diameter

Ring Width

Ring Wall

Alternate Part #

List Price

31/4X.145CIR N/A 3.25 Inch (in) Outside Diameter, 0.154/0.155 Inch (in) Ring Width, and 0.121/0.134 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.25 in N/A 0.154 in0.155 in N/A 0.121 in0.134 in N/A SPR-3253 {}
31/4X1/4CIR N/A 3.25 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.103/0.118 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.25 in N/A 0.248 in0.249 in N/A 0.103 in0.118 in N/A SPR-3252 {}
31/4X1/8CIR N/A 3.25 Inch (in) Outside Diameter, 0.123/0.124 Inch (in) Ring Width, and 0.103/0.118 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.25 in N/A 0.123 in0.124 in N/A 0.103 in0.118 in N/A P-1015-04 {}
31/4X3/16CIR N/A 3.25 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.103/0.118 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.25 in N/A 0.185 in0.186 in N/A 0.103 in0.118 in N/A P-1015 SPR-3250 {}
31/4X5/32CIR N/A 3.25 Inch (in) Outside Diameter, 0.154/0.155 Inch (in) Ring Width, and 0.103/0.118 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.25 in N/A 0.154 in0.155 in N/A 0.103 in0.118 in N/A P1015-05 SPR-3253 {}
31/8X3/16 CIR N/A 3.125 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.100/0.115 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.125 in N/A 0.185 in0.186 in N/A 0.100 in0.115 in N/A SPR-3120 {}
33/4X1/4CIR N/A 3.75 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.109/0.124 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.75 in N/A 0.248 in0.249 in N/A 0.109 in0.124 in N/A SPR-3751 {}
33/4x3/16 CIR N/A 3.75 Inch (in) Outside Diameter, 0.186/0.187 Inch (in) Ring Width, and 0.115/0.130 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.75 in N/A 0.186 in0.187 in N/A 0.115 in0.130 in N/A SPR-3750 {}
35/8X1/4CIR N/A 3.625 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.155/0.160 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.625 in N/A 0.248 in0.249 in N/A 0.155 in0.160 in N/A SPR-3625 {}
37/8X1/4CIR N/A 3.875 Inch (in) Outside Diameter, 0.249/0.250 Inch (in) Ring Width, and 0.132/0.137 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3.875 in N/A 0.249 in0.250 in N/A 0.132 in0.137 in N/A SPR-3875 {}
3X1/4CIR N/A 3 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.095/0.110 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3 in N/A 0.248 in0.249 in N/A 0.095 in0.110 in N/A P1013-08 {}
3X1/8CIR N/A 3 Inch (in) Outside Diameter, 0.123/0.124 Inch (in) Ring Width, and 0.095/0.110 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3 in N/A 0.123 in0.124 in N/A 0.095 in0.110 in N/A P-1013-04 {}
3X3/16CIR N/A 3 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.095/0.110 Inch (in) Ring Wall Cast Iron Piston Ring N/A 3 in N/A 0.185 in0.186 in N/A 0.095 in0.110 in N/A P1013 SPR-3000 {}
41/2X1/4CIR N/A 4.50 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.145/0.160 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.50 in N/A 0.248 in0.249 in N/A 0.145 in0.160 in N/A P-1023 {}
41/2X3/16CIR N/A 4.50 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.145/0.160 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.50 in N/A 0.185 in0.186 in N/A 0.145 in0.160 in N/A P-1023-06 {}
41/2X5/16CIR N/A 4.50 Inch (in) Outside Diameter, 0.310/0.311 Inch (in) Ring Width, and 0.145/0.160 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.50 in N/A 0.310 in0.311 in N/A 0.145 in0.160 in N/A P-1023-10 {}
41/4X1/4CIR N/A 4.25 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.135/0.150 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.25 in N/A 0.248 in0.249 in N/A 0.135 in0.150 in N/A P1022 SPR-4251 {}
41/4X3/16CIR N/A 4.25 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.127/0.142 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.25 in N/A 0.185 in0.186 in N/A 0.127 in0.142 in N/A {}
43/4X1/4CIR N/A 4.75 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.152/0.167 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.75 in N/A 0.248 in0.249 in N/A 0.152 in0.167 in N/A P1024 SPR-4751 {}
43/4X1/8CIR N/A 4.75 Inch (in) Outside Diameter, 0.123/0.124 Inch (in) Ring Width, and 0.152/0.167 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4.75 in N/A 0.123 in0.124 in N/A 0.152 in0.167 in N/A P-1024-04 {}
4X1/4CIR N/A 4 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.127/0.142 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4 in N/A 0.248 in0.249 in N/A 0.127 in0.142 in N/A P1021 SPR-4000 {}
4X3/16CIR N/A 4 Inch (in) Outside Diameter, 0.185/0.186 Inch (in) Ring Width, and 0.127/0.142 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4 in N/A 0.185 in0.186 in N/A 0.127 in0.142 in N/A P-1021-06 SPR-4002 {}
4X5/16CIR N/A 4 Inch (in) Outside Diameter, 0.310/0.311 Inch (in) Ring Width, and 0.135/0.145 Inch (in) Ring Wall Cast Iron Piston Ring N/A 4 in N/A 0.310 in0.311 in N/A 0.135 in0.145 in N/A SPR-4003 {}
5.030X1/4CIR N/A 5.03 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.165/0.185 Inch (in) Ring Wall Cast Iron Piston Ring N/A 5.03 in N/A 0.248 in0.249 in N/A 0.165 in0.185 in N/A SPR-5030 {}
51/2X1/4CIR N/A 5.50 Inch (in) Outside Diameter, 0.248/0.249 Inch (in) Ring Width, and 0.175/0.190 Inch (in) Ring Wall Cast Iron Piston Ring N/A 5.50 in N/A 0.248 in0.249 in N/A 0.175 in0.190 in N/A SPR-5502 {}
Unit of Measure
1 2 3 4