McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    39 Products

    Hollow Tapered Plugs

    Image of Product. Front orientation. Contains Annotated. Protective Plugs. Hollow Tapered Plugs.
    A hollow construction makes these plugs extra flexible, so they compress for easy installation and a snug fit. The tapered profile fits a range of hole diameters. If you flip the plug over, it can be used as a cap.
    High-Temperature Silicone Rubber—Withstand multiple passes when paint baking, powder coating, and electroplating.
    For ID
    For Pipe
    Size
    Ht.
    Max. Temp.,
    ° F
    Color
    Flange
    Dia.
    Pkg.
    Qty.
    Pkg.
    High-Temperature Silicone Rubber
    0.116" to 0.182"1/8
    		3/8"450Red11/32"10000000000000
    0.24" to 0.295"1/4
    		3/8"450Red15/32"1000000000000
    0.325" to 0.367"1/4
    		3/16"450Red1/2"1000000000000
    0.361" to 0.418"3/8
    		3/8"450Red19/32"1000000000000
    0.471" to 0.536"1/2
    		7/16"450Red23/32"1000000000000
    0.58" to 0.667"1/2
    		1/2"450Red27/32"1000000000000
    0.64" to 0.727"1/2
    		1/2"450Red29/32"1000000000000
    0.69" to 0.788"3/4
    		9/16"450Red31/32"1000000000000
    0.802" to 0.911"3/4
    		5/8"450Red1 3/32"1000000000000
    0.866" to 0.975"3/4
    		5/8"450Red1 5/32"1000000000000
    0.964" to 1.09"1
    		3/4"450Red1 9/32"1000000000000
    1.094" to 1.215"1
    		3/4"450Red1 7/16"10000000000000
    1.224" to 1.355"1 1/4
    		3/4"450Red1 17/32"10000000000000
    1.312" to 1.465"1 1/4
    		7/8"450Red1 21/32"500000000000
    1.447" to 1.6"1 1/2
    		7/8"450Red1 25/32"500000000000
    1.56" to 1.682"1 1/2
    		3/4"450Red1 29/32"5000000000000
    1 3/4" to 1.88"1 1/2
    		3/4"450Red2 1/32"5000000000000
    1.78" to 1.95"1 1/2
    		1"450Red2 5/32"200000000000
    1.9" to 2.076"2
    		1"450Red2 9/32"200000000000
    2.035" to 2.21"2
    		1"450Red2 3/8"200000000000
    2.255" to 2.43"2
    		1"450Red2 19/32"2000000000000
    2.525" to 2.7"2 1/2
    		1"450Red2 27/32"200000000000
    2.765" to 2.94"2 1/2
    		1"450Red3 3/32"2000000000000
     

    Vented Plugs for Pipe and Tubing

    Image of Product. Front orientation. Contains Annotated. Protective Plugs. For Pipe, For Round Holes, Vented, For Round Shapes, Push In.
    Keep coatings out of female threaded pipe and release pressure while they cure. Push in these plugs and a rib holds them in place. Tear away the tab to vent.
    High-Temperature Silicone Rubber—Withstand multiple passes when paint baking, powder coating, and electroplating.
    Pipe
    Size
    For Thread
    Type
    Ht.
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    External Square Drive
     
    High-Temperature Silicone Rubber
    1/2
    		NPT
    		19/32"600Pink100000000000000
    3/4
    		NPT
    		19/32"600Yellow10000000000000
    1
    		NPT
    		11/16"600Clear100000000000
    1 1/4
    		NPT
    		3/4"600Green100000000000
    1 1/2
    		NPT
    		23/32"600White100000000000
    2
    		NPT
    		23/32"600Blue100000000000
     

    Tapered Caps

    Image of Product. Front orientation. Protective Caps. Tapered Caps.
    Don't worry about having the exact size you need on hand. These caps are shaped to fit a range of ODs—just keep pushing on until they're snug. Because they make less contact with the parts they cover, they’re easier to remove than straight caps. In a pinch, you can flip tapered caps over and use them as plugs.
    High-Temperature Silicone Rubber—Withstand multiple passes when paint baking, powder coating, and electroplating. Caps are flexible to conform to parts.
    For OD
    For Pipe
    Size
    Inside
    Ht.
    Flexibility
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    High-Temperature Silicone Rubber
    0.111" to 0.177"1/8
    		0.38"Flexible450Red10000000000000
    0.235" to 0.302"1/4
    		0.38"Flexible450Red1000000000000
    0.356" to 0.422"3/8
    		0.38"Flexible450Red1000000000000
    0.468" to 0.545"1/2
    		0.44"Flexible450Red1000000000000
    0.687" to 0.785"3/4
    		0.56"Flexible450Red1000000000000
    0.901" to 1.027"1
    		3/4"Flexible450Red10000000000000
     

    Self-Draining Breather Vents

    Minimize moisture buildup in enclosures. Also known as drain plugs, these breather vents have a small outlet that allows condensation to drain. They have a silicone O-ring above the threads for a tight seal. Install them at the lowest point of the enclosure. Breather vents meet IP66 for protection in washdown environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.
    Threaded NPT Male
    Image of Product. Bottom orientation. Breather Vents. Self-Draining Breather Vents.
    316 Stainless Steel Body and Fitting—316 stainless steel breather vents have excellent corrosion resistance.
    Brass Body and Fitting—Brass breather vents have good corrosion resistance.
    Pipe
    Size
    Max. Flow Rate
    @ Pressure
    Max.
    Pressure
    Max. Temp.,
    ° F
    Ht.
    Dia.
    For Use
    With
    Environment
    Hazardous Location Protection Type
    Enclosure
    Rating
    Hazardous Location Rating
    O-Ring
    Material
    Certification
    Features
    Each
    316 Stainless Steel Body and Fitting
    1/4
    		Not RatedNot Rated3201 1/16"11/16"AirCorrosive, Dusty, Outdoor, Washdown, Wet—IP66, NEMA 4X
    		—Silicone Rubber
    		—Drain0000000000000
    1/2
    		Not RatedNot Rated3201 1/8"1"AirCorrosive, Dusty, Hazardous, Outdoor, Washdown, WetIncreased Safety, Protection by EnclosureIP66, NEMA 4X
    		ATEX I M2 Ex E I Mb; ATEX II 2 GD Ex E IIC Gb Ex Tb IIIC Db; IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IECEx Ex E I/IIC Mb/Gb; IECEx Ex IIIC Tb DbSilicone Rubber
    		CE Marked
    		Drain000000000000
     
    Brass Body and Fitting
    1/4
    		Not RatedNot Rated3201 1/16"11/16"AirCorrosive, Dusty, Outdoor, Washdown, Wet—IP66, NEMA 4X
    		—Silicone Rubber
    		—Drain000000000000
    1/2
    		Not RatedNot Rated3201 1/8"1"AirCorrosive, Dusty, Hazardous, Outdoor, Washdown, WetIncreased Safety, Protection by EnclosureIP66, NEMA 4X
    		ATEX I M2 Ex E I Mb; ATEX II 2 GD Ex E IIC Gb Ex Tb IIIC Db; IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IECEx Ex E I/IIC Mb/Gb; IECEx Ex IIIC Tb DbSilicone Rubber
    		CE Marked
    		Drain000000000000
     
    back to top