Home / Fittings / Quick-Connect Fittings / John Guest Metal Half Cartridge - 1/4 Brass Body, Gray Acetal Collet, Single Nitrile O-ring
John Guest

John Guest Metal Half Cartridge - 1/4 Brass Body, Gray Acetal Collet, Single Nitrile O-ring

Part Number: MI2808N
Your price:
The John Guest brass half cartridges are an easy and cost-effective way of incorporating a push-fit connection into a wide range of OEM equipment. Easy to assemble and compact, push in connections avoid the need for threaded ports, offer improved product appearance and easy tube connection. Metal Half Cartridges consist of three components: a collet, a brass body and O-ring. Metal Half Cartridges are only recommended for use with soft metal housing materials. 

  • Compatible with plastic or copper OD sized tubing
  • Quick and easy connection/disconnection
  • For filtration and food grade applications
  • Food grade Nitrile O-Ring
  • Made with lead free materials

Working pressure and temperature:  
  • Max. 230 psi at 68° F
  • Max. 150 psi at 150° F

Note: As Plastic Half Cartridges are intended for use by Original Equipment Manufacturers they are only supplied in bulk quantities.

Part # Tubing Size Color/Material O-Ring Material # of
PM2804S 5/32" OD Gray/Acetal Nitrile 1
PM2804S2 5/32" OD Gray/Acetal Nitrile 2
PI2808S 1/4" OD Gray/Acetal Nitrile 1
PI2808W 1/4" OD White/Acetal Nitrile 1
PCI2808S 1/4" OD Gray/Acetal EPDM 1
PI2808S2 1/4" OD Gray/Acetal Nitrile 2
PI2808W2 1/4" OD White/Acetal Nitrile 2
PCI2808S2 1/4" OD Gray/Acetal EPDM 2
PM2808S 5/16" OD Gray/Acetal Nitrile 1
PM2808W 5/16" OD White/Acetal Nitrile 1
PCM2808S 5/16" OD Gray/Acetal EPDM 1
PM2808S2 5/16" OD Gray/Acetal Nitrile 2
PM2808W2 5/16" OD White/Acetal Nitrile 2
PCM2808S2 5/16" OD Gray/Acetal EPDM 2
PI2812S 3/8" OD Gray/Acetal Nitrile 1
PI2812W 3/8" OD White/Acetal Nitrile 1
PCI2812S 3/8" OD Gray/Acetal EPDM 1
PI2812S2 3/8" OD Gray/Acetal Nitrile 2
PI2812W2 3/8" OD White/Acetal Nitrile 2
PCI2812S2 3/8" OD Gray/Acetal EPDM 2
PI2816S 1/2" OD Gray/Acetal Nitrile 1
PCI2816S 1/2" OD Gray/Acetal EPDM 1
PI2816S2 1/2" OD Gray/Acetal Nitrile 2
PCI2816S2 1/2" OD Gray/Acetal EPDM 2
PCI2820 1/2" CTS
(5/8" OD)
Gray/Acetal EPDM 1
PCI2828 3/4" CTS
(7/8" OD)
Gray/Acetal EPDM 1
PM2806E 6mm OD Black/Acetal Nitrile 1
PM2806E2 6mm OD Black/Acetal Nitrile 2
PCM2806E 6mm OD  Black/Acetal  EPDM 
PCM2808E 8mm OD  Black/Acetal  EPDM 
PM2808E 8mm OD Black/Acetal Nitrile 1
PM2808E2 8mm OD Black/Acetal Nitrile 2
PM2810E 10mm OD Black/Acetal Nitrile 1
PM2810E2 10mm OD Black/Acetal Nitrile 2
California residents Prop 65 Warning
This product contains materials known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov