Skip to content

Free shipping on most orders over $89!

Brands Contact Us

Country/Region

United States (USD $)

Search

Product type

All
Accessories
Air Filters

Need Help?

Call (864) 284-1801

Track Order Cart

Cart Log in Login

Menu

Systems
Replacement Filters & Cartridges
Components
Application
Water Problems
Blog
About Us
Contact Us
Clearance

Need Help?

Call (864) 284-1801

Home
Fitting Cartridges

Fitting Cartridges

Filters

Sort by:

Featured
Most relevant
Best selling

Compare

View as List Grid

FiltersFilter & Sort

Applied Filters

Clear all

Availability

In stock (91)
Out of stock (21)

Clear

Type

Fitting Cartridges (96)

Clear

Brand

John Guest (48)
neoFit (31)
Parker (16)
Tomlinson (1)

Clear

Fitting Connection Size

1/8" Tube OD (1)
5/32" Tube OD (4)
3/16" Tube OD (1)
1/4" Tube OD (13)
5/16" Tube OD (7)
3/8" Tube OD (12)
1/2" Tube OD (7)
5/8" Tube OD (1)
7/8" Tube OD (1)
6mm Tube OD (3)
8mm Tube OD (3)
10mm Tube OD (2)

Clear

Push-In Size

5/32" OD (2)
3/16" OD (1)
1/4" OD (15)
5/16" OD (6)
3/8" OD (12)
1/2" OD (8)
5/8" OD (1)
7/8" OD (1)
4mm OD (1)
6mm OD (5)
8mm OD (6)
10mm OD (4)
12mm OD (4)
4mm (5/32") OD (3)
8mm (5/16") OD (2)

Clear

Seal / O-Ring Material

Buna-N (Nitrile) (28)
EPDM (22)

Clear

Color / Finish

Black (22)
Blue (5)
Brass (17)
Gray (30)
White (21)

Clear

Shape

End Stop (14)
Straight (49)
Tee (1)

Clear

Series

Half Cartridges (42)
LF 3000 (3)
Polymer Cartridges (1)

Clear

Sort by:

Featured
Most relevant
Best selling

Compare

Parker
Carstick Quick Fitting Polymer Cartridge 8mm (5/16")

Regular price From $1.94

Part #: 6300-08-00

Save up to 32% with bulk pricing
Compare

John Guest
John Guest Plastic Half Cartridge - 6mm Black Double Nitrile O-ring

Regular price From $1.39

Part #: PM2806E2

Save up to 44% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Gray 1/4"

Regular price From $1.05

Part #: HCAB-4G

Save up to 12% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Black EPDM O-Ring 1/2"

Regular price From $2.34

Part #: HCAE-8E

Save up to 46% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Gray 3/8"

Regular price From $1.28

Part #: HCAB-6G

Save up to 12% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Black 1/4"

Regular price From $1.18

Part #: HCAB-4E

Save up to 51% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Black 8mm(5/16")

Regular price From $1.24

Part #: HCAB-8ME

Save up to 45% with bulk pricing
Compare

John Guest
John Guest Plastic Half Cartridge - 8mm Black Double Nitrile O-ring

Regular price From $1.54

Part #: PM2808E2KIT

Save up to 44% with bulk pricing
Compare

Sold Out

John Guest
John Guest Plastic Half Cartridge - 10mm Black Double Nitrile O-ring

Regular price From $2.02

Sold out

Part #: PM2810E2

Save up to 44% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal White 1/4"

Regular price From $1.18

Backordered

Part #: HCAB-4W

Save up to 12% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal White 3/8"

Regular price From $0.74

Backordered

Part #: HCAB-6W

Save up to 10% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal White 1/2"

Regular price From $1.36

Part #: HCAB-8W

Save up to 10% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Gray 10"

Regular price From $1.16

Backordered

Part #: HCAE-10MG

Save up to 12% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Black 10"

Regular price From $1.16

Part #: HCAE-10ME

Save up to 12% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Black 1/2"

Regular price From $1.36

Part #: HCAB-8E

Save up to 10% with bulk pricing
Compare

Sold Out

neoFit
NeoFit - Half Cartridge Acetal Gray 4mm(5/32")

Regular price From $1.06

Sold out

Part #: HCAE-4MG

Save up to 46% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Gray 8mm(5/16")

Regular price From $1.24

Part #: HCAE-8MG

Save up to 45% with bulk pricing
Compare

neoFit
NeoFit - Half Cartridge Acetal Gray 1/2"

Regular price From $2.36

Part #: HCAB-8G

Save up to 46% with bulk pricing
Compare

Parker
Carstick Polymer Nickel-Plated Brass Cartridge 290 psi, NBR (1/8")

Regular price From $2.24

Backordered

Part #: 3100-53-0099
Compare

Parker
Carstick Polymer Brass Cartridge 290 psi, NBR,4mm (5/32")

Regular price From $1.47

Backordered

Part #: 3100-04-00

Save up to 5% with bulk pricing
Compare

Parker
Carstick Polymer LIQUIfit Brass Cartridge, 230 PSI, EPDM, 10mm (3/8")

Regular price From $6.72

Backordered

Part #: 6300-10-00
Compare

Parker
Carstick Polymer Brass Cartridge 290 psi, NBR 8mm (5/16")

Regular price From $1.79

Backordered

Part #: 3100-08-00
Compare

Parker
Carstick Polymer Nickel-Plated Brass Cartridge 290 psi, NBR, (1/4")

Regular price From $2.33

Part #: 3100-56-0099
Compare

Parker
Carstick Polymer LIQUIfit Brass Cartridge, 230 PSI, EPDM, 6mm (1/4")

Regular price From $3.35

Backordered

Part #: 6300-06-00
Compare

Parker
Carstick Polymer LIQUIfit Brass Cartridge, 230 PSI, EPDM, 12mm (1/2")

Regular price From $6.79

Backordered

Part #: 6300-12-00

Save up to 25% with bulk pricing
Compare

Parker
Carstick Polymer Brass Cartridge 290 psi, NBR, 12mm (1/2")

Regular price From $10.95

Backordered

Part #: 3100-12-00
Compare

Parker
Carstick Polymer Brass Cartridge 290 psi, NBR, 10 mm (3/8")

Regular price From $3.56

Backordered

Part #: 3100-10-00

Showing 81 of 96

Want to learn more?

Your cart

Your cart is empty

Subtotal:$0.00 USD

Loading...

M - F 8:00am to 7:00pm EST

Call: (864) 284-1801

Toll Free: (877) 930-7295

2299 Ridge Road Greenville, SC 29607

3195 W Professional Circle Suite 200 - Salt Lake City, UT 84104

Facebook
YouTube
Instagram
LinkedIn

Shop

Water Filtration & Treatment Systems
Pumps & Motors
Fittings & Valves
Filter Housings & Components
Filters & Media
Tubing & Hoses
Food & Beverage Filtration Systems
Clearance
Parts & Accessories
Under-Sink & Countertop Water Filters
Brands
View All Categories

Help

Track My Order
Get a Quote
Shipping
Bulk Pricing
Returns
Contact Us

Info

About Us
neo™ Brand
Cleanroom Facility
Blog
Careers
Local Pickup
Industries
Certifications & Quality Standards

Payment methods accepted

Country/Region

United States (USD $)

© 2026 Fresh Water Systems - All Rights Reserved

Terms and Conditions
Privacy Policy
Accessibility

Compare /3

Loading...

Loading...

Choose options

Item added to your cart.

View cart