FP Series

Plastic Pipe Plugs for Product Protection
FP Series
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Flared Fitting Plugs

Embrace superior quality with our FP Series flared fitting plug. Expertly designed to seal SAE flare fittings and JIC flare fittings, this series ensures complete protection. Unlike standard sealing options, these red cap plugs feature precision threading that resists vibration and prevents leaks in high-pressure hydraulic and pneumatic systems.

Choose our threaded plastic plugs for superior sealing of hydraulic applications and more. The flared design provides a more secure, uniform seal on metal-to-metal connections, reducing the risk of contamination and costly fluid loss. You can trust Polymer Molding to deliver the absolute best flared-fitting plug solutions.

FP Series flared fitting plugs are threaded to fit flared SAE/JIC fittings. They have knurled grips to aid in insertion and removal, and a positive seal for low-pressure requirements. Engineers depend on these plugs for reliable performance during the assembly, shipping, and maintenance of hydraulic lines—where durability and precision matter most.

  • Typical wall thickness: .032
  • Color: Red
  • Material: Low Density Polyethylene
  • LDPE service temperature: 150° F (66° C)
  • Available specs: MIL-C-5501/1 (MIL-C-52078), NAS-833 (NAS-815)
  • RoHS Compliant
FP Series product diagram

Product Options

Please confirm that your Part Number is correct and adjust the other selections below to meet your application's requirements.

Make Your Selection Below

PART NO. COLOR TO PLUG THREAD SIZE TUBING SIZE SAE/JIC DASH NO. A B C PRODUCT OPTIONS
in. in. in.
FP-1 Red 5/16"-24 1/8" -2 0.506 12.852 0.175 4.445 0.410 10.414 Carton 12,000 1 1,000 100 410.40 107.60 37.63
FP-2 Red 3/8"-24 3/16" -3 0.560 14.224 0.175 4.445 0.445 11.303 Carton 8,500 1 1,000 100 290.70 107.60 37.63
FP-3 Red 7/16"-20 1/4" -4 0.675 17.145 0.185 4.699 0.515 13.081 Carton 6,500 1 1,000 100 315.25 152.50 53.36
FP-4 Red 1/2"-20 5/16" -5 0.735 18.669 0.245 6.223 0.515 13.081 Carton 6,500 1 1,000 100 315.25 152.50 53.36
FP-5 Red 9/16"-18 3/8" (37°) -6 0.865 21.971 0.245 6.223 0.500 12.700 Carton 4,500 1 1,000 100 245.70 171.80 60.11
FP-6 Red 5/8"-18 3/8" (45°) -6 0.865 21.971 0.245 6.223 0.570 14.478 Carton 4,500 1 1,000 100 245.70 171.80 60.11
FP-7 Red 3/4"-16 1/2" -8 0.985 25.019 0.245 6.223 0.750 19.050 Carton 3,000 1 500 50 171.00 89.65 31.37
FP-8 Red 7/8"-14 5/8" -10 1.115 28.321 0.245 6.223 0.855 21.717 Carton 1,800 1 500 50 113.22 98.90 34.62
FP-9 Red 1 1/16"-12 3/4" (37°) -12 1.300 33.020 0.245 6.223 0.860 21.844 Carton 1,200 1 200 20 93.00 48.64 17.47
FP-10 Red 1 1/16"-14 3/4" (45°) -12 1.365 34.671 0.245 6.223 1.100 27.940 Carton 1,000 1 200 20 87.30 54.92 19.22
FP-12 Red 1 5/16"-12 1" (37°) -16 1.540 39.116 0.245 6.223 0.915 23.241 Carton 1,700 1 200 20 205.19 75.86 26.56

More Options

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