Skip to content

Foster FF Plus Series Couplers

Foster FF Plus Series flat-face hydraulic quick couplers and plugs — the upgraded ISO 16028 flush-face line. The flat-face design minimizes fluid spillage and air inclusion at connection, with bidirectional flow and an optional Connect-Under-Pressure design. Offered in nickel-plated steel and 316 stainless, salt-spray tested to 1,200 hours. Body sizes 1/4" to 1-1/2", NPT and SAE ORB threads.

  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 19% Save %
    $ 73.00
    $ 73.00 - $ 73.00
    $ 73.00
    $ 59.00
    $ 59.00 - $ 59.00
    $ 59.00

    Foster 12FFPDC, 1/2" FF Plus Plug Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1/2" FF Plus flat-face couplers clean and protected. The Foster 12FFPDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 73.00
    $ 73.00 - $ 73.00
    $ 73.00
    $ 59.00
    $ 59.00 - $ 59.00
    $ 59.00
    Save 19% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 17% Save %
    $ 69.00
    $ 69.00 - $ 69.00
    $ 69.00
    $ 57.00
    $ 57.00 - $ 57.00
    $ 57.00

    Foster 12FFSDC, 1/2" FF Plus Socket Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1/2" FF Plus flat-face couplers clean and protected. The Foster 12FFSDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 69.00
    $ 69.00 - $ 69.00
    $ 69.00
    $ 57.00
    $ 57.00 - $ 57.00
    $ 57.00
    Save 17% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 21% Save %
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00
    $ 62.00
    $ 62.00 - $ 62.00
    $ 62.00

    Foster 16FFPDC, 5/8" FF Plus Plug Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 5/8" FF Plus flat-face couplers clean and protected. The Foster 16FFPDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00
    $ 62.00
    $ 62.00 - $ 62.00
    $ 62.00
    Save 21% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 19% Save %
    $ 75.00
    $ 75.00 - $ 75.00
    $ 75.00
    $ 61.00
    $ 61.00 - $ 61.00
    $ 61.00

    Foster 16FFSDC, 5/8" FF Plus Socket Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 5/8" FF Plus flat-face couplers clean and protected. The Foster 16FFSDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 75.00
    $ 75.00 - $ 75.00
    $ 75.00
    $ 61.00
    $ 61.00 - $ 61.00
    $ 61.00
    Save 19% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 22% Save %
    $ 82.00
    $ 82.00 - $ 82.00
    $ 82.00
    $ 64.00
    $ 64.00 - $ 64.00
    $ 64.00

    Foster 19FFPDC, 3/4" FF Plus Plug Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 3/4" FF Plus flat-face couplers clean and protected. The Foster 19FFPDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 82.00
    $ 82.00 - $ 82.00
    $ 82.00
    $ 64.00
    $ 64.00 - $ 64.00
    $ 64.00
    Save 22% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 21% Save %
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00
    $ 62.00
    $ 62.00 - $ 62.00
    $ 62.00

    Foster 19FFSDC, 3/4" FF Plus Socket Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 3/4" FF Plus flat-face couplers clean and protected. The Foster 19FFSDC PVC dust cap shields the flat sealing face from dirt and debris w...

    View full details
    $ 78.00
    $ 78.00 - $ 78.00
    $ 78.00
    $ 62.00
    $ 62.00 - $ 62.00
    $ 62.00
    Save 21% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 123.00
    $ 123.00 - $ 123.00
    $ 123.00
    $ 98.00
    $ 98.00 - $ 98.00
    $ 98.00

    Foster 25FFPDC, 1" FF Plus Plug Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1" FF Plus flat-face couplers clean and protected. The Foster 25FFPDC PVC dust cap shields the flat sealing face from dirt and debris whe...

    View full details
    $ 123.00
    $ 123.00 - $ 123.00
    $ 123.00
    $ 98.00
    $ 98.00 - $ 98.00
    $ 98.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 117.00
    $ 117.00 - $ 117.00
    $ 117.00
    $ 94.00
    $ 94.00 - $ 94.00
    $ 94.00

    Foster 25FFSDC, 1" FF Plus Socket Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1" FF Plus flat-face couplers clean and protected. The Foster 25FFSDC PVC dust cap shields the flat sealing face from dirt and debris whe...

    View full details
    $ 117.00
    $ 117.00 - $ 117.00
    $ 117.00
    $ 94.00
    $ 94.00 - $ 94.00
    $ 94.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 45.00
    $ 45.00 - $ 45.00
    $ 45.00
    $ 36.00
    $ 36.00 - $ 36.00
    $ 36.00

    Foster 6FFPDC, 1/4" FF Plus Plug Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1/4" FF Plus flat-face couplers clean and protected. The Foster 6FFPDC PVC dust cap shields the flat sealing face from dirt and debris wh...

    View full details
    $ 45.00
    $ 45.00 - $ 45.00
    $ 45.00
    $ 36.00
    $ 36.00 - $ 36.00
    $ 36.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 21% Save %
    $ 43.00
    $ 43.00 - $ 43.00
    $ 43.00
    $ 34.00
    $ 34.00 - $ 34.00
    $ 34.00

    Foster 6FFSDC, 1/4" FF Plus Socket Dust Cap, FF Plus Series, PVC

    In stock

    Keep your 1/4" FF Plus flat-face couplers clean and protected. The Foster 6FFSDC PVC dust cap shields the flat sealing face from dirt and debris wh...

    View full details
    $ 43.00
    $ 43.00 - $ 43.00
    $ 43.00
    $ 34.00
    $ 34.00 - $ 34.00
    $ 34.00
    Save 21% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 2,277.00
    $ 2,277.00 - $ 2,277.00
    $ 2,277.00
    $ 1,823.00
    $ 1,823.00 - $ 1,823.00
    $ 1,823.00

    Foster FF10CUPP-06, 3/8" Flat Face Connect-Under-Pressure Hydraulic Plug x 3/8" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10CUPP-06 is a nickel-plated steel 3/8" plug from...

    View full details
    $ 2,277.00
    $ 2,277.00 - $ 2,277.00
    $ 2,277.00
    $ 1,823.00
    $ 1,823.00 - $ 1,823.00
    $ 1,823.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 2,277.00
    $ 2,277.00 - $ 2,277.00
    $ 2,277.00
    $ 1,823.00
    $ 1,823.00 - $ 1,823.00
    $ 1,823.00

    Foster FF10CUPP-08, 3/8" Flat Face Connect-Under-Pressure Hydraulic Plug x 1/2" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10CUPP-08 is a nickel-plated steel 3/8" plug from...

    View full details
    $ 2,277.00
    $ 2,277.00 - $ 2,277.00
    $ 2,277.00
    $ 1,823.00
    $ 1,823.00 - $ 1,823.00
    $ 1,823.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 387.00
    $ 387.00 - $ 387.00
    $ 387.00
    $ 309.00
    $ 309.00 - $ 309.00
    $ 309.00

    Foster FF10P-06, 3/8" Flat Face Hydraulic Plug x 3/8" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10P-06 is a nickel-plated steel 3/8" plug from th...

    View full details
    $ 387.00
    $ 387.00 - $ 387.00
    $ 387.00
    $ 309.00
    $ 309.00 - $ 309.00
    $ 309.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 4,888.00
    $ 4,888.00 - $ 4,888.00
    $ 4,888.00
    $ 3,911.00
    $ 3,911.00 - $ 3,911.00
    $ 3,911.00

    Foster FF10P-06SS, 3/8" Flat Face Hydraulic Plug x 3/8" Female NPT, FF Plus Series, 316 Stainless Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10P-06SS is a 316 stainless steel 3/8" plug from ...

    View full details
    $ 4,888.00
    $ 4,888.00 - $ 4,888.00
    $ 4,888.00
    $ 3,911.00
    $ 3,911.00 - $ 3,911.00
    $ 3,911.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 465.00
    $ 465.00 - $ 465.00
    $ 465.00
    $ 373.00
    $ 373.00 - $ 373.00
    $ 373.00

    Foster FF10P-08, 3/8" Flat Face Hydraulic Plug x 1/2" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10P-08 is a nickel-plated steel 3/8" plug from th...

    View full details
    $ 465.00
    $ 465.00 - $ 465.00
    $ 465.00
    $ 373.00
    $ 373.00 - $ 373.00
    $ 373.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 5,587.00
    $ 5,587.00 - $ 5,587.00
    $ 5,587.00
    $ 4,469.00
    $ 4,469.00 - $ 4,469.00
    $ 4,469.00

    Foster FF10P-08SS, 3/8" Flat Face Hydraulic Plug x 1/2" Female NPT, FF Plus Series, 316 Stainless Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10P-08SS is a 316 stainless steel 3/8" plug from ...

    View full details
    $ 5,587.00
    $ 5,587.00 - $ 5,587.00
    $ 5,587.00
    $ 4,469.00
    $ 4,469.00 - $ 4,469.00
    $ 4,469.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 578.00
    $ 578.00 - $ 578.00
    $ 578.00
    $ 463.00
    $ 463.00 - $ 463.00
    $ 463.00

    Foster FF10P-75ORB, 3/8" Flat Face Hydraulic Plug x 3/4"-16 ORB, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10P-75ORB is a nickel-plated steel 3/8" plug from...

    View full details
    $ 578.00
    $ 578.00 - $ 578.00
    $ 578.00
    $ 463.00
    $ 463.00 - $ 463.00
    $ 463.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 1,066.00
    $ 1,066.00 - $ 1,066.00
    $ 1,066.00
    $ 853.00
    $ 853.00 - $ 853.00
    $ 853.00

    Foster FF10S-06, 3/8" Flat Face Hydraulic Coupler x 3/8" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10S-06 is a nickel-plated steel 3/8" coupler from...

    View full details
    $ 1,066.00
    $ 1,066.00 - $ 1,066.00
    $ 1,066.00
    $ 853.00
    $ 853.00 - $ 853.00
    $ 853.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 8,031.00
    $ 8,031.00 - $ 8,031.00
    $ 8,031.00
    $ 6,424.00
    $ 6,424.00 - $ 6,424.00
    $ 6,424.00

    Foster FF10S-06SS, 3/8" Flat Face Hydraulic Coupler x 3/8" Female NPT, FF Plus Series, 316 Stainless Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10S-06SS is a 316 stainless steel 3/8" coupler fr...

    View full details
    $ 8,031.00
    $ 8,031.00 - $ 8,031.00
    $ 8,031.00
    $ 6,424.00
    $ 6,424.00 - $ 6,424.00
    $ 6,424.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 1,047.00
    $ 1,047.00 - $ 1,047.00
    $ 1,047.00
    $ 837.00
    $ 837.00 - $ 837.00
    $ 837.00

    Foster FF10S-08, 3/8" Flat Face Hydraulic Coupler x 1/2" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10S-08 is a nickel-plated steel 3/8" coupler from...

    View full details
    $ 1,047.00
    $ 1,047.00 - $ 1,047.00
    $ 1,047.00
    $ 837.00
    $ 837.00 - $ 837.00
    $ 837.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 8,728.00
    $ 8,728.00 - $ 8,728.00
    $ 8,728.00
    $ 6,983.00
    $ 6,983.00 - $ 6,983.00
    $ 6,983.00

    Foster FF10S-08SS, 3/8" Flat Face Hydraulic Coupler x 1/2" Female NPT, FF Plus Series, 316 Stainless Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10S-08SS is a 316 stainless steel 3/8" coupler fr...

    View full details
    $ 8,728.00
    $ 8,728.00 - $ 8,728.00
    $ 8,728.00
    $ 6,983.00
    $ 6,983.00 - $ 6,983.00
    $ 6,983.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 1,300.00
    $ 1,300.00 - $ 1,300.00
    $ 1,300.00
    $ 1,040.00
    $ 1,040.00 - $ 1,040.00
    $ 1,040.00

    Foster FF10S-75ORB, 3/8" Flat Face Hydraulic Coupler x 3/4"-16 ORB, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF10S-75ORB is a nickel-plated steel 3/8" coupler f...

    View full details
    $ 1,300.00
    $ 1,300.00 - $ 1,300.00
    $ 1,300.00
    $ 1,040.00
    $ 1,040.00 - $ 1,040.00
    $ 1,040.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 2,556.00
    $ 2,556.00 - $ 2,556.00
    $ 2,556.00
    $ 2,045.00
    $ 2,045.00 - $ 2,045.00
    $ 2,045.00

    Foster FF12CUPP-08, 1/2" Flat Face Connect-Under-Pressure Hydraulic Plug x 1/2" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF12CUPP-08 is a nickel-plated steel 1/2" plug from...

    View full details
    $ 2,556.00
    $ 2,556.00 - $ 2,556.00
    $ 2,556.00
    $ 2,045.00
    $ 2,045.00 - $ 2,045.00
    $ 2,045.00
    Save 20% Save %
  • Foster FHS4M4B-103, 1/2" Snap-Tite H Interchange Coupler x 1/2" Male NPT, FH Series, EPDM Seal, Brass
    Save 20% Save %
    $ 2,556.00
    $ 2,556.00 - $ 2,556.00
    $ 2,556.00
    $ 2,045.00
    $ 2,045.00 - $ 2,045.00
    $ 2,045.00

    Foster FF12CUPP-12, 1/2" Flat Face Connect-Under-Pressure Hydraulic Plug x 3/4" Female NPT, FF Plus Series, Nickel-Plated Steel

    In stock

    Premium flat-face hydraulic connections that stay clean and lose virtually no fluid. The Foster FF12CUPP-12 is a nickel-plated steel 1/2" plug from...

    View full details
    $ 2,556.00
    $ 2,556.00 - $ 2,556.00
    $ 2,556.00
    $ 2,045.00
    $ 2,045.00 - $ 2,045.00
    $ 2,045.00
    Save 20% Save %