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Threaded O-ring Plugs - UNF Threads

In stock

Threaded O-ring Plugs for UNF Threads include a compressed flange lip and an O-ring (optional) to provide a watertight seal and superior leakage prevention for hydraulic threads. The threaded O-ring keeps contaminants like dirt, dust, debris, and moisture out of the hole.

It may be installed using a hex wrench, screwdriver, or hand. Often used on flat-faced hydraulic fittings, it is recommended when strength and resistance are desired as it can withstand temperatures that range from -40F to 230F | -40C to 110C. Used in oil and gas, plumbing, and automotive sectors where leak-proof seals are crucial to system integrity.

  • Material: PP, HDPE
  • Colour: Yellow, Black, Red
  • Material Flammability Standard: UL94 V-0

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36 results
Product SKUs information
Item Code Price range Availability Compatible Thread Sizes (All) View
£ 0.0911 - £ 0.0991 3553 In stock
7⁄16 in x 20
£ 0.1319 - £ 0.1319 31 In stock
3/4 in x 16
£ 0.2176 - £ 0.2327 3989 In stock
13⁄16 in x 12
£ 0.0729 - £ 0.0794 4790 In stock
3/8 in x 24
£ 0.1152 - £ 0.1226 15184 In stock
5/8 in x 18
£ 0.1793 - £ 0.1944 12069 In stock
9/16 in x 18
£ 0.4066 - £ 0.4422 1426 In stock
1-7/8 in x 12
£ 0.1714 - £ 0.4311 15007 In stock
1-1/16-12
£ 1.179 - £ 3.1901 1400 In stock
1-7/8-12
£ 0.1149 - £ 0.2741 17391 In stock
9/16-18
£ 0.1528 - £ 0.3863 4058 In stock
1-14
£ 0.3723 - £ 0.8317 In production
1-5/8-12
£ 0.1409 - £ 0.1877 9062 In stock
9/16-18
£ 0.2033 - £ 0.4835 998 In stock
1-5/16-12
£ 0.1221 - £ 0.3364 15096 In stock
7/16-20
£ 0.1409 - £ 0.3389 4277 In stock
3/4-16
£ 0.2464 - £ 0.7726 1767 In stock
1-3/16-12
£ 0.152 - £ 0.4595 14998 In stock
7/16-20
£ 0.1382 - £ 0.3491 4177 In stock
7/8-14
£ 0.2007 - £ 0.4785 8544 In stock
1-3/16-12
  • of 2
Threaded Plug with Gasket UNF 7⁄16 in x 20 HDPE Yellow

498673

Price Range
£ 0.0991 - £ 0.0911

Stock Levels
3553 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    7⁄16 in x 20
Threaded Plug with Gasket UNF 3/4 in x 16 HDPE Yellow

498676

Price Range
£ 0.1319 - £ 0.1319

Stock Levels
31 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    3/4 in x 16
Threaded Plug with Gasket UNF 13⁄16 in x 12 HDPE Yellow

498678

Price Range
£ 0.2327 - £ 0.2176

Stock Levels
3989 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    13⁄16 in x 12
Threaded Plug with Gasket UNF 3/8 in x 24 HDPE Yellow

498672

Price Range
£ 0.0794 - £ 0.0729

Stock Levels
4790 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    3/8 in x 24
Threaded Plug with Gasket UNF 5/8 in x 18 HDPE Yellow

498552

Price Range
£ 0.1226 - £ 0.1152

Stock Levels
15184 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    5/8 in x 18
Threaded Plug with Gasket UNF 11⁄16 in x 12 HDPE Yellow

498554

Price Range
£ 0.1944 - £ 0.1793

Stock Levels
12069 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    9/16 in x 18
Threaded Plug with Gasket UNF 1-7/8 in x 12 HDPE Yellow

498680

Price Range
£ 0.4422 - £ 0.4066

Stock Levels
1426 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    1-7/8 in x 12
Threaded Plug UNF 1-1/16-12 HDPE Red

BLM10B

Price Range
£ 0.4311 - £ 0.1714

Stock Levels
15007 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-7/8-12 HDPE Red

BLM14B

Price Range
£ 3.1901 - £ 1.179

Stock Levels
1400 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 9/16-18 HDPE Red

BLM5B

Price Range
£ 0.2741 - £ 0.1149

Stock Levels
17391 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-14 HDPE Red

BLM9B

Price Range
£ 0.3863 - £ 0.1528

Stock Levels
4058 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-5/8-12 PP Yellow

BL13D

Price Range
£ 0.8317 - £ 0.3723

Stock Levels
In production
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 9/16-18 PP Yellow

BL5K

Price Range
£ 0.1877 - £ 0.1409

Stock Levels
9062 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded Plug UNF 1-5/16-12 HDPE Red

BLM12B

Price Range
£ 0.4835 - £ 0.2033

Stock Levels
998 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 7/16-20 HDPE Red

BLM3B

Price Range
£ 0.3364 - £ 0.1221

Stock Levels
15096 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 3/4-16 HDPE Red

BLM7B

Price Range
£ 0.3389 - £ 0.1409

Stock Levels
4277 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-3/16-12 PP Yellow

BL11D

Price Range
£ 0.7726 - £ 0.2464

Stock Levels
1767 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 7/16-20 PP Yellow

BL3L

Price Range
£ 0.4595 - £ 0.152

Stock Levels
14998 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 7/8-14 PP Yellow

BL8H

Price Range
£ 0.3491 - £ 0.1382

Stock Levels
4177 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded Plug UNF 1-3/16-12 HDPE Red

BLM11B

Price Range
£ 0.4785 - £ 0.2007

Stock Levels
8544 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 7/16-24 HDPE Red

BLM3-24B

Price Range
£ 0.3539 - £ 0.1286

Stock Levels
16000 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 5/8-18 HDPE Red

BLM6B

Price Range
£ 0.3514 - £ 0.1448

Stock Levels
14312 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-1/16-12 PP Yellow

BL10I

Price Range
£ 0.4646 - £ 0.3857

Stock Levels
206 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 1-7/8-12 PP Yellow

BL14C

Price Range
£ 1.4837 - £ 0.538

Stock Levels
700 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 3/4-16 PP Yellow

BL7J

Price Range
£ 0.326 - £ 0.1222

Stock Levels
3233 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNF 1-5/8-12 HDPE Red

BLM13B

Price Range
£ 1.3707 - £ 0.6114

Stock Levels
1438 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1/2-20 HDPE Red

BLM4B

Price Range
£ 0.2791 - £ 0.1165

Stock Levels
5998 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 7/8-14 HDPE Red

BLM8B

Price Range
£ 0.3464 - £ 0.1448

Stock Levels
3207 In stock
Attributes
  • Fitting Style
    Threaded - Plastic Molded O-Ring
  • Colour
    Red
  • Full Material
    High Density Polyethylene
  • Material Flammability Standard
    UL94 V-0
  • Compatible Thread Standard (All)
    UNF
Threaded O-Ring Plug UNF 1-5/16-12 PP Yellow

BL12H

Price Range
£ 1.1166 - £ 0.4244

Stock Levels
46 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Yellow
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded O-Ring Plug UNC 1/2-13 PP Black

BL4B

Price Range
£ 0.2093 - £ 0.1521

Stock Levels
2500 In stock
Attributes
  • Fitting Style
    Threaded
  • Thread Engagement
    Threaded Fitting Plugs
  • Colour
    Black
  • Full Material
    Polypropylene
  • Material Flammability Standard
    UL94 V-0
Threaded Plug with Gasket UNF 9⁄16 in x 18 HDPE Yellow

498675

Price Range
£ 0.104 - £ 0.104

Stock Levels
413 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    9⁄16 in x 18
Threaded Plug with Gasket UNF 1 in x 14 HDPE Yellow

498553

Price Range
£ 0.1711 - £ 0.1711

Stock Levels
2485 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    1 in x 14
Threaded Plug with Gasket UNF 1-5/8 in x 12 HDPE Yellow

498679

Price Range
£ 0.3723 - £ 0.3436

Stock Levels
1614 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    1-5/8 in x 12
Threaded Plug with Gasket UNF 1/2 in x 20 HDPE Yellow

498674

Price Range
£ 0.0974 - £ 0.0896

Stock Levels
7592 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    1/2 in x 20
Threaded plug with Gasket UNF 7/8 in x 14 HDPE Yellow

498677

Price Range
£ 0.141 - £ 0.1291

Stock Levels
5000 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    7/8 in x 14
Threaded Plug with Gasket UNF 15⁄16 in x 12 HDPE Yellow

498555

Price Range
£ 0.2724 - £ 0.256

Stock Levels
10187 In stock
Attributes
  • Fitting Style
    Threaded
  • Colour
    Yellow
  • Full Material
    High Density Polyethylene
  • Compatible Thread Standard (All)
    UNF
  • Compatible Thread Sizes (All)
    15⁄16 in x 12