1/4 NPT Plugs, Stoppers, and Inserts

32 Results
Nylon Hole Plug -- 8600
from Keystone Electronics Corp.

Part Number: 8600. Color: Black. For Panel Thickness: .032 [.8] -.125 [3.2]. Hole Diameter: .250 [6.4]. Material: Nylon [See More]

  • NPT Thread: 1/4" NPT
  • Material: Nylon; Nylon
Plastic Threaded Plugs for NPT Pipe Fittings -- P-28
from Caplugs

The P Series plugs are available in six different styles for tapered and straight threads. Designed to keep out moisture, dirt and other contaminants in pipe fittings. Material: High-density polyethylene. Standard Color: Red [See More]

  • NPT Thread: 1/4" NPT
  • Material: Polyethylene (PE)
  • Features: Threaded
Pressure/Leak Test NPT Male Plug
from HydraCheck Inc.

For use with the Pressure/Leak, Hand-operated Pump. These HydraCheck pressure/leak test connectors are designed exclusively for pressure/leak testing components with NPT connectors – you are ready to test!. Comes with STAUFF Test 20 connector. [See More]

  • NPT Thread: 1/4" NPT; 3/8" NPT; 1/2" NPT; 3/4" NPT; 1" NPT; 1 1/4" NPT; 1 1/2" NPT
  • Features: Threaded
  • Shape / Application: Round; Screw Cap or Plug
250 15-5PH High Strength Lee Plug®
from Lee Co. (The)

This member of our classic Lee Plug family is designed to seal passageways in high strength, high hardness materials such as titanium and inconel. Its construction from high strength material and unique geometry, coupled with the proven reliability of our Lee Plug expansion principal are what gives... [See More]

  • NPT Thread: 1/4" NPT; 0.250 inches
  • Material: 15-5PH
  • Shape / Application: Round
1/4 NPT Metal Screw In Vent Plug -- MIV-NPT1-4MS
from Shenzhen Milvent Technology Co., Limited

Breather Plug. Thread: NPT1/4 Metal Vent Plug. Waterproof, IP66, IP67, IP68. Breather able. Application: Lighting, Solar, Telecom, Automotive, Agriculture. WIFI GPS. etc. Performance: · Pressure equalization and release in order to extend seal life. · Prevent condensation. · Block... [See More]

  • NPT Thread: 1/4" NPT; NPT1/4
  • Features: Threaded
  • Shape / Application: Screw Cap or Plug
  • Material: AL
ADP Series - Threaded Aluminum Plugs for Flareless Tube and Hose Assemblies
from Arizona Sealing Devices, Inc.

Series ADP Plugs have a dimpled nose section that forms a low pressure seal with flareless tube ends. The addition of a neoprene shoulder gasket enables the ADP-GN to provide a positive seal on the spot face of the O-ring port. Gaskets are also optionally available in Butyl or Buna N rubber. [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded
  • Shape / Application: Round
  • Material: Aluminum
Barrel Plugs with Flange -- BPF130
from MOCAP LLC

Material: LDPE (Low Density Polyethylene). Stocked Material: LDPE (Black), LDPE (Natural). General Purpose Plug Designed to Protect Threads, Ports or Fittings from Damage, Debris and Contaminants. Flanged for Easy Removal [See More]

  • NPT Thread: 1/4" NPT; 1/4
  • BSP Thread: 1/4" BSP; 1/4
  • Features: Threaded; Flange
  • Straight Thread: M12x1, M12x1.25, M13x1.5
Steel Hole Plug -- 7600
from Keystone Electronics Corp.

Part Number: 7600. Finish/Plating: Nickel Plate. For Panel Thickness: .032 [.8] - .062 [1.6]. Hole Diameter: .250 [6.4]. Material: Steel. Type: Hole Plug [See More]

  • NPT Thread: 1/4" NPT
  • Material: Steel - Stainless; Steel
  • Shape / Application: Round
Threaded (UN and UNS) Plugs -- DPN-4
from Caplugs

Designed for use in aircraft and hydraulic equipment applications and seals out contaminants while protecting threads. A rolled thread allows the plug to be pushed or threaded in. Threads meet UN/UNS specifications. External ribs aid in installation and removal. Designed for UN/UNS threads. Flanged... [See More]

  • NPT Thread: 1/4" NPT; 7/16
  • Material: Polyethylene (PE)
  • Features: Threaded
250 Aluminum Lee Plug®
from Lee Co. (The)

This member of our classic Lee Plug family is ideal for installation into aluminum manifolds. Lee plugs continue to be the simplest, most successful method for sealing cross-drilled holes. Upon installation of the pin, controlled expansion causes the lands and grooves of the plug to “bite... [See More]

  • NPT Thread: 1/4" NPT; 0.250 inches
  • Material: Aluminum; Aluminum
  • Shape / Application: Round
100pcs 1/4'' NPT Breather Vent for Powertrain or Gearbox -- MIV-1-4MA-BV
from Shenzhen Milvent Technology Co., Limited

100pcs 1/4'' NPT Breather Vent for Powertrain or Gearbox [See More]

  • NPT Thread: 1/4" NPT; 1/4''
  • Material: Aluminum; Aluminum
Hex Socket Plugs for NPT Threads -- HSPN0250
from MOCAP LLC

Material: PP (Polypropylene). Stocked Material: PP (Red). Designed to Protect Threads from Dirt, Dust and Moisture During Low-Pressure Testing and In-Plant Handling [See More]

  • NPT Thread: 1/4" NPT; 1/4 - 18
  • Overall Length: 0.5000
  • Features: Threaded
  • Material: Polypropylene (PP)
Threaded Aluminum Plugs for Flareless Tube and Hose Assemblies -- ADP-4
from Caplugs

ADP Series threaded aluminum plugs offer a dimpled nose section to form a low-pressure seal with tube ends. Optional Gaskets: Neoprene, Butyl, Buna N Rubber. Specs: MIL-C-5501/2, NAS-842. Material: 3003-0 Aluminum Alloy. Standard Color: Silver [See More]

  • NPT Thread: 1/4" NPT; 7/16
  • Material: Aluminum
  • Features: Threaded
250 Aluminum R.F.O.® Plug
from Lee Co. (The)

This R.F.O. plug is designed to apply radial force only on an installation hole. This plug can be used to seal openings in thin shells as well as fragile materials. It is engineered to fit into passages without the need for a support shoulder and there is no downward pressure during installation. [See More]

  • NPT Thread: 1/4" NPT; 0.250 inches
  • Material: Aluminum; Aluminum
  • Shape / Application: Round
G1/4''' or G thread type Breather Milvent -- MIV-G1/4B
from Shenzhen Milvent Technology Co., Limited

G1/4''' or G thread type Breather Milvent. Waterproof, IP66,. Breather able. Application: Lighting, Solar, Telecom, Automotive, Agriculture. WIFI GPS. Outdoor Enclosure etc. Performance: · Pressure equalization and release in order to extend seal life. · Prevent condensation. · Block... [See More]

  • NPT Thread: 1/4" NPT; G1/4
  • Material: Plastic
  • Features: Threaded
High Temperature Vinyl Insertion Plugs -- MCP9256T
from MOCAP LLC

Material: High-Temp Vinyl (Black). Flexible Yet Durable - Won't Split, Tear or Shred. Wide Flange for Easy Removal [See More]

  • NPT Thread: 1/4" NPT; 1/4
  • Material: Ethyl Vinyl Acetate (EVA); Vinyl
  • Features: Flange
250 Monel Lee Plug®
from Lee Co. (The)

This member of our classic Lee Plug family is made from Monel, a nickel alloy that provides exceptional corrosion resistance in a variety of applications. Lee plugs continue to be the simplest, most successful method for sealing cross-drilled holes. Upon installation of the pin, controlled expansion... [See More]

  • NPT Thread: 1/4" NPT; 0.250 inches
  • Material: Monel; Monel
  • Shape / Application: Round
Paper Tapered Plugs -- MPTP006
from MOCAP LLC

Material: Paper (Brown). Environmentally Friendly and Economical Masking Solution. Does Not Promote Condensation [See More]

  • NPT Thread: 1/4" NPT; 1/4
  • Overall Length: 0.3622
  • BSP Thread: 1/4" BSP; G1/4
  • Material: Paper
1/4-18 NPT Commercial Grade Hex Thread Plug, Natural -- AP032518N
from ARKPLAS

Our Commercial Grade Fittings are molded for ease of use in application. No special tools or ferrules are required for fitting insertion. Ark-Plas ® Commercial Grade Fittings fit the need when a low cost, high performance fitting is required that is both cost efficient and reliable. With high... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Knurled
  • Shape / Application: Screw Cap or Plug
  • Fitted Depth: 0.7200
Vent Plug with Deflector, 1/4" Male NPT -- A3229-2
from Oil-Rite Corp.

Vent plugs with Deflectors feature a sturdy one-piece construction, safe for use anywhere. They are used on bearings, gear boxes, reservoirs, and any application where pressure or vacuum relief is necessary. They can also be used as filler plugs. This vent plug features a splash deflector to prevent... [See More]

  • NPT Thread: 1/4" NPT
  • Material: Steel
  • Features: Threaded; Vented
Pipe Plug Fittings
from International Polymer Solutions Inc.

Pressure Ratings: Performance at ambient room conditions: 120 psi for 1/16 ” fittings linear decreasing to 80 psi for 3/4 ” fittings and 60 psi for fittings larger than 3/4". Performance at elevated temperatures up to 85 ºC/185 ºF: 90 psi for 1/16 ” fittings linear... [See More]

  • NPT Thread: 1/8" NPT; 1/4" NPT; 3/8" NPT; 1/2" NPT; 3/4" NPT; 1" NPT; 1 1/2" NPT; 1/16 NPT
  • Features: Tapered
  • Shape / Application: Round
  • Diameter: 0.4400 to 2
P Series -- P-12
from Polymer Molding, Inc.

Designed similar to the tapered series, the P Series has the added feature of a pull-tab located on the top of the flange. Typical wall thickness: .032. Color: Blue. Material: Low Density Polyethylene. LDPE service temperature: 150 ° F (66 ° C). RoHS Compliant [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Tapered; Flange; Pull Tab
  • Shape / Application: Round
  • Straight Thread: 1/2" Standard Threaded
EZP Series (NPT Plugs) -- EZP 152
from Daemar Inc.

These tapered plugs were designed to cap NPT fittings, but have a universal design ideal for a variety of applications. These durable, multi-use plugs have a flange for easy installation and removal. Material: Low-Density Polyethylene Colour: Orange [See More]

  • NPT Thread: 1/4" NPT
1/4-18 NPT Commercial Grade Hex Thread Plug, Natural -- AP032518P
from ARKPLAS

Our Commercial Grade Fittings are molded for ease of use in application. No special tools or ferrules are required for fitting insertion. Ark-Plas ® Commercial Grade Fittings fit the need when a low cost, high performance fitting is required that is both cost efficient and reliable. With high... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Knurled
  • Shape / Application: Screw Cap or Plug
  • Fitted Depth: 0.7200
Vent Plug With Filter and Check Valve, 1/4" Male NPT, Clear Anodized Aluminum -- A3585-3
from Oil-Rite Corp.

Vent Plugs with Filters and Check Valves can be used to relieve pressure or vacuum on bearing housings, gear boxes, reservoirs, or any application where venting is necessary. Vent plugs assure pressure equalization and minimize undesirable problems, such as bearing seal blowout due to excessive... [See More]

  • NPT Thread: 1/4" NPT
  • Material: Aluminum
  • Features: Threaded; Vented
PI Series -- PI-1/2
from Polymer Molding, Inc.

Push-In Plugs are designed to snap-fit into specific thread sizes. They are less labor intensive to install than threaded plugs yet provide an attractive flush finish to your product. Typical wall thickness: .032. Color: Yellow. Material: Low Density Polyethylene. LDPE service temperature: 150 °... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Flange
  • Shape / Application: Round; Button Plug
  • Straight Thread: Standard Thread 1/2"
P Series (Plastic Threaded Plugs for Pipe Fittings) -- P-28
from Daemar Inc.

Series P Pipe Plugs are available in three styles: square head, round head and recessed socket. They are molded in high density polyethylene and are ideal for keeping moisture, dirt and other contaminants from NPT-threaded ports. Material: High-Density Polyethylene Colour*: Red Applicable Specs:... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded
1/4-18 NPT Commercial Grade Slotted Thread Plug, Natural -- AP03SPLG25018N
from ARKPLAS

Our Commercial Grade Fittings are molded for ease of use in application. No special tools or ferrules are required for fitting insertion. Ark-Plas ® Commercial Grade Fittings fit the need when a low cost, high performance fitting is required that is both cost efficient and reliable. With high... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Slotted Head; Recessed Socket
  • Shape / Application: Round; Screw Cap or Plug
  • Fitted Depth: 0.5000
Vent Plug with Filter and Deflector, 1/4" Male NPT -- A5170-2
from Oil-Rite Corp.

Vent Plugs with Filters and Deflectors can be used to relieve pressure or vacuum on bearing housing, gear boxes, reservoirs, or any application where venting is necessary. These vent plugs assure pressure equalization and minimize undesirable problems, such as bearing seal blowout due to excessive... [See More]

  • NPT Thread: 1/4" NPT
  • Material: Steel
  • Features: Threaded; Vented
PR Series -- PR-12
from Polymer Molding, Inc.

The PR Series Pull-Ring Plugs offer product protection with easy removal. The tapered style polyethylene plugs have built-in lift rings for easy installation and removal resulting in reduced product damage and increased cost savings. Ring design lays flat resulting in more efficient packaging. All... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Tapered; Flange; Pull Tab
  • Shape / Application: Round
  • Diameter: 0.4500
Vent Plug with Filter, 1/4" Male NPT -- A3432-2
from Oil-Rite Corp.

Vent Plugs with Filters can be used to relieve pressure or vacuum on bearing housings, gear boxes, reservoirs, or any application where venting is necessary. These vent plugs assure pressure equalization and minimize undesirable problems, such as bearing seal blowout due to excessive pressure. The... [See More]

  • NPT Thread: 1/4" NPT
  • Material: Steel
  • Features: Threaded; Vented
Tapered Series -- POLY-PLUG-12
from Polymer Molding, Inc.

The tapered style can either be used as a cap or plug, depending on application. Excellent for protecting threads and keeping unwanted contamination out of pipes, valves, tubing and most other cylindrical openings. The most economical solution for protecting standard size threads, unified threads,... [See More]

  • NPT Thread: 1/4" NPT
  • Features: Threaded; Tapered; Flange
  • Shape / Application: Round
  • Straight Thread: 1/2" Standard Threaded