Test Plugs – Low Pressure – Nylon

Low Cost, In-expensive Nylon Plugs – Use as Purge Plugs to block lines when welding or as a low pressure stopper for liquids or gas.

Available in Sizes 1/2″ to 6″ – For larger sizes refer our webpage for Aluminum Plugs

 

Description

An Easy, Simple, Positive Seal!  Nylon Plugs are suitable for a myriad of applications and range from 0.5 to 6″ (12 to 150 mm). For larger sizes up to 36″ please refer our webpage for Aluminum Plugs

Use as Purge Plugs to block lines when welding or as a low pressure stopper for liquids or gas. When other purge systems or purge film cannot be used to make a suitable barrier for purging pipes, tubes or fittings, the Nylon  Plugs™ may offer a satisfactory option .

They are mostly used for leak testing of pipework fabrications, or simply to prevent the ingress of dirt, vermin or other unwanted material. However, there are over 100 different applications for these plugs. HFT Pipestoppers® Nylon Plugs are constructed from injection-molded, high-grade nylon components and rubber rings. They have the advantages of being light, non-rusting, low cost, provide very fast and effective sealing, easy to expand and can be dismantled for cleaning purposes. Nylon 6 is an engineered polymer which is resistant to salt water corrosion as well as to many other chemicals.

Effective sealing is simple, insert the plug into a pipe or cylindrical opening and tighten the wing nut clockwise. The rubber ring will expand and provide a positive seal. To remove simply reverse the process. Testing and sealing of all pipes, pipe joints and pipework assemblies can be done with the HFT Pipestoppers® Nylon Plugs.

Other applications include sealing holes in castings, tanks, other assemblies for spraying and blasting to protect the insides, maintenance and installation of swimming pool and water spa pipework, for use as ‘Scupper Plugs’ in ships, for telecommunication pipelines and pipework up to 6″, as radiator test plugs for cars and commercial vehicles, as heat exchanger tube plugs, etc.

The standard seals are made from natural rubber. Other available options are: Natural Rubber, Silicone, Nitrile, Neoprene & Viton.

The HFT Pipestoppers® Nylon Plugs can be supplied with a hollow shaft for screwing on standard hose connections, or for using our own fixed nipple caps, or the nipple and cap assemblies. The smaller size plugs can be supplied with solid shafts for greater pressure testing capabilities.

Size range for the two types are:

HFT Pipestoppers® Nylon Plugs Solid Stem

PART NºDESCRIPTIONPRODUCT SIZESIZE RANGEHEIGHT OF SEALWEIGHT
PSP1013
PSP1019
PSP1025
PSP1032
PSP1038
Solid Stem Small Bore Plug
Solid Stem Small Bore Plug
Solid Stem Small Bore Plug
Solid Stem Small Bore Plug
Solid Stem Small Bore Plug
1/2″
3/4″
1″
1 1/4″
1 1/2″
13 mm
19 mm
25 mm
32 mm
38 mm
14 – 19 mm
18 – 25 mm
24 – 36 mm
30 – 44 mm
36 – 51 mm
20 mm
23 mm
25 mm
31 mm
31 mm
10 gms
15 gms
20 gms
35 gms
45 gms

HFT Pipestoppers® Nylon Plugs Hollow Shaft with 8 mm Connection

PART NºDESCRIPTIONPRODUCT SIZESIZE RANGEHEIGHT OF SEALWEIGHT
PSP113H
PSP119H
PSP125H
PSP132H
PSP138H
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
1/2″
3/4″
1″
1 1/4″
1 1/2″
13 mm
19 mm
25 mm
32 mm
38 mm
13 – 19 mm
18 – 26 mm
23 – 36 mm
30 – 43 mm
36 – 50 mm
20 mm
23 mm
25 mm
31 mm
31 mm
10 gms
15 gms
20 gms
35 gms
45 gms

HFT Pipestoppers® Nylon Plugs Hollow Shaft with 1/2″ BSP Connection

PART NºDESCRIPTIONPRODUCT SIZESIZE RANGEHEIGHT OF SEALWEIGHT
PSP2038
PSP2050
PSP2063
PSP2075
PSP2085
PSP2100
PSP2115
PSP2125
PSP2150
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
Hollow Shaft Small Bore Plug
1 1/2″
2″
2 1/2″
3″
3 1/2″
4″
4 1/2″
5″
6″
38 mm
51 mm
64 mm
76 mm
90 mm
102 mm
114 mm
127 mm
152 mm
36 – 53 mm
49 – 64 mm
63 – 76 mm
73 – 88 mm
82 – 98 mm
92 – 110 mm
110 – 130 mm
119 – 142 mm
145 – 164 mm
31 mm
31 mm
31 mm
31 mm
31 mm
35 mm
35 mm
37 mm
37 mm
70 gms
80 gms
130 gms
140 gms
148 gms
160 gms
216 gms
280 gms
390 gms

HFT Pipestoppers® Nylon Plug Accessories

PART NºDESCRIPTION
PSPS1002
PSPS1001
PSPS1019
Nipple Cap with Washer 1/2″ BSP
1/2″ BSP swivel nut with free tail piece and washer
Small Bore Nipple Caps (8 mm nominal)

Hollow shaft plugs from 0.5 to 1.5″ (12 to 37 mm) diameter have an outside thread of 8 mm and are provided with sealing caps. Sizes of 1.5″ (37 mm) and above are threaded with a 1/2″ BSP thread for the connection of industry standard nuts/hose fittings and are provided with a solid end cap seal. These plugs will provide airtight seals.

Optional end caps are available for the 1/2″ BSP threads, with fixed nipples/nozzles for hose connection or free nipples that can rotate when heavier hoses are used.

Nylon 6 is an engineered polymer which is resistant to salt water corrosion it is also resistant to many other chemicals. Along with natural rubber rings they provide a high quality leak tight seal in the selected orifice.

Some examples of Nylon Plugs used as Weld Purge Plugs

Some examples of Nylon Plugs used as Low Pressure pipestoppers