NOPAK Class 1, 2 & SVR Seal Kits

All parts are unconditionally guaranteed. our minimum sale is $15.00. All shipments are FOB Shipping Point

This page is set up with a SECURE SHOPPING CART using industry-standard SSL encryption. To place an order, click on the ADD TO CART Button next to the products(s) of your choice.

We accept AMERICAN EXPRESS, DISCOVER, MASTERCARD, VISA, PAYPAL and ON-LINE E-CHECKS. SORRY, NO COD SHIPMENTS.

IF THE SERIAL NUMBER OF YOUR CLASS 1, 2 OR M SHOWS "CLASS 1 (OR 2)N" USE THE PISTON KITS BEGINNING WITH "PK" U FROM THE LISTED KITS.

IF YOUR CYLINDER WAS MANUFACTURED PRIOR TO APRIL 2012, USE THE KITS BEGINNING WITH PK12M***. THESE KITS ARE AVAILABLE ONLY UNTIL PRESENT INVENTORY IS GONE. (NOTE, ALL OF THESE KITS ARE GONE)

CONTACT US using the link in the menu. We will email you a page showing the types of piston configurations available. It will make it easier to figure out which kit you need.

IF YOUR CYLINDER WAS MADE AFTER APRIL, 2012 USE THE KITS BEGINNING WITH "PKU12M*** THESE KITS INCLUDE U-CUP PISTON SEALS THAT WILL NOT FIT THE EARLIER SERIES.

THE KITS MARKED "PKUP***" INCLUDE THE NEWER U-CUPS AND A NEW PISTON THAT WILL CONVERT THE OLD STYLE CYLINDERS TO THE NEW STYLE. IF YOU HAVE A CYLINDER THAT NEEDS BUNA A (NITRILE) SEALS THEY ARE IDENTIFIED BY THE LETTER "A" AT THE END OF THE KIT NUMBERS. IF YOU HAVE A HIGH-TEMPERATURE APPLICATION REQUIRING VITON SEALS, CHECK WITH US FOR PRICING.

Consult us for assistance in determining which piston seal kit is required.


  • PK12M-200A
    PK12M-200A$34.50
    PISTON KIT FOR 2.00" BORE - OLD STYLE KIT FOR CYLINDERS MANUFACTURED PRIOR TO APRIL 2012. DISCONTINUED BUT HAVE PLENTY OF THEM IN STOCK.

    SKU #PK12M-200A

  • PK12M-250A
    PK12M-250A$38.60
    PISTON KIT FOR 2.50" BORE - OLD STYLE KIT FOR CYLINDERS MANUFACTURED PRIOR TO APRIL 2012. DISCONTINUED BUT HAVE (2) IN STOCK.

    SKU #PK12M-250A

  • PK12M-600A
    PK12M-600A$0.00
    PISTON KIT FOR 6.00" BORE - OLD STYLE KIT FOR CYLINDERS MANUFACTURED PRIOR TO APRIL 2012. ***DISCONTINUED*** ORDER RETRO-FIT KIT #PKUP-600

    SKU #PK12M-600A

  • PKU-1000A
    PKU-1000A$262.30
    PISTON KIT FOR 10.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-1000A

  • PKU-1200A
    PKU-1200A$405.20
    PISTON KIT FOR 12.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-1200A

  • PKU-1400A
    PKU-1400A$513.90
    PISTON KIT FOR 14.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-1400A

  • PKU-150A
    PKU-150A$27.70
    PISTON KIT FOR 1.50" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-150A

  • PKU-200A
    PKU-200A$29.20
    PISTON KIT FOR 2.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-200A

  • PKU-250A
    PKU-250A$31.10
    PISTON KIT FOR 2.50" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-250A

  • PKU-300A
    PKU-300A$32.30
    PISTON KIT FOR 3.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-300A

  • PKU-400A
    PKU-400A$35.20
    PISTON KIT FOR 4.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-400A

  • PKU-500A
    PKU-500A$41.20
    PISTON KIT FOR 5.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-500A

  • PKU-600A
    PKU-600A$45.10
    PISTON KIT FOR 6.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-600A

  • PKU-800A
    PKU-800A$111.90
    PISTON KIT FOR 8.00" BORE - NEW STYLE KIT FOR CYLINDERS MANUFACTURED AFTER APRIL 2012.

    SKU #PKU-800A

  • PKUP-150A
    PKUP--150A$68.70
    PISTON KIT FOR 1.50" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-150A

  • PKUP-1000A
    PKUP-1000A$972.30
    PISTON KIT FOR 10.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-1000A

  • PKUP-1200A
    PKUP-1200A$2,083.20
    PISTON KIT FOR 12.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-1200A

  • PKUP-1400A
    PKUP-1400A$2,294.70
    PISTON KIT FOR 14.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-1400A

  • PKUP-200A
    PKUP-200A$87.90
    PISTON KIT FOR 2.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-200A

  • PKUP-300A
    PKUP-300A$116.90
    PISTON KIT FOR 3.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-300A

  • PKUP-400A
    PKUP-400A$135.90
    PISTON KIT FOR 4.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-400A

  • PKUP-500A
    PKUP-500A$202.60
    PISTON KIT FOR 5.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE

    SKU #PKUP-500A

  • PKUP-600A
    PKUP-600A$249.50
    PISTON KIT FOR 6.00 "BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE.

    SKU #PKUP-600A

  • PKUP-800A
    PKUP-800A$542.70
    PISTON KIT FOR 8.00" BORE CYLINDERS RETROFIT KITS THAT INCLUDE U-CUPS AND A NEW PISTON THAT CONVERTS THE OLD STYLE CYLINDERS TO THE NEW STYLE.

    SKU #PKUP-800A

  • RK12M-100A
    RK12M-100A 1" ROD KIT$25.00
    ROD SEAL KIT FOR 1" ROD

    SKU #RK12M-100A

  • RK12M-125A
    RK12M-125A 1.25" ROD$25.80
    ROD SEAL KIT FOR 1.25" ROD

    SKU #RK12M-125A

  • RK12M-150A
    RK12M-150A 1.5" ROD$27.30
    ROD SEAL KIT FOR 1.50" ROD

    SKU #RK12M-150A

  • RK12M-175A
    RK12M-175A 1-3/4" ROD$67.10
    ROD SEAL KIT FOR 1.75" ROD

    SKU #RK12M-175A

  • RK12M-200A
    RK12M-200A 2" ROD$30.70
    SEAL KIT FOR 2" ROD

    SKU #RK12M-200A

  • RK12M-225A
    RK12M-225A 2-1/4" ROD$31.70
    SEAL KIT FOR 2.25" ROD

    SKU #RK12M-225A

  • RK12M-250A
    RK12M-250 2-1/2" ROD$36.70
    SEAL KIT FOR 2-1/2" ROD

    SKU #RK12M-250A

  • RK12M-275A
    RK12M-275 2-3/4" ROD$41.70
    SEAL KIT FOR 2.75" ROD

    SKU #RK12M-275A

  • RK12M-300A
    RK12M-300A 3" ROD$45.00
    SEAL KIT FOR 3" ROD

    SKU #RK12M-300A

  • RK12M-63A
    RK12M-63A 5/8" ROD$20.10
    ROD SEAL KIT FOR 5/8" ROD

    SKU #RK12M-63A

  • RK12M-75A
    RK12M-75A 3/4" ROD$24.00
    SEAL KIT FOR 3/4" ROD

    SKU #RK12M-75A

  • RK12M-88A
    RK12M-88A 7/8" ROD$24.30
    ROD SEAL KIT FOR 7/8" ROD

    SKU #RK12M-88A