Pneumatic Silencer & Exhaust Restrictor Function Fittings

Pneumatic silencers are used in pneumatic systems to safely vent pressurized air to the atmosphere. Also known as mufflers they are typically used with valves, manifolds, cylinders, compressors and fittings. RS Components offer a range of high-quality silencers from leading brands including Festo, SMC, Legris IMI Norgren and of course RS PRO.

Why would I need a pneumatic silencer?

Vented air that exits from an exhaust port can be so powerful it can produce a noise loud enough to be harmful to the environment or workers. Additionally, the exhausted air can also contain contaminants during operation. A silencer is a cost-effective solution used for noise reduction and to remove unwanted contaminants from clogging pneumatic systems.

How does a pneumatic silencer work?

Silencers are installed directly into the exhaust port of pneumatic valves and equipment. They work by diffusing the released air via a larger surface area. This, in turn, reduces the turbulence and decreases noise levels.

What are the different types of pneumatic silencers?

The two most common types of silencer are conical or flat. Both designs come in a range of different working pressure and temperature ratings, connection types and housing materials both metal and plastic. The application will influence the type of silencer selected.

Housing Materials

The housing material of your silencer should be carefully considered when making your selection, application and environment will influence this. There are various housing materials available, the most common being sintered brass, sintered bronze and stainless steel.

Connection Types

Most pneumatic silencers have a threaded male connection, or alternatively, they can have a push-in hose connection. Thread standards include BSP (British Standard Pipe) these can be BSPP (parallel or G) or BSPT (tapered or R). Other threads types are NPT (National Pipe Thread) or Metric, M3, M5, M7.


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Description Price Manufacturer Series Type Inlet Connection Type Threaded Inlet Connection Tube Inlet Connection Noise Reduction Maximum Input Pressure Material Minimum Operating Temperature Threaded Inlet Connection Thread Gender Maximum Operating Temperature Threaded Inlet Connection Thread Standard Threaded Inlet Connection Thread Size Body Material
RS Stock No. 454-7402
Mfr. Part No.0674 00 17
BrandLegris
SGD5.37
Each
units
0674 Silencer Threaded G 3/8 Male - - 10bar PE -10°C Male +80°C G 3/8 in Polymer
RS Stock No. 456-4851
Mfr. Part No.0682 00 21
BrandLegris
SGD57.95
Each
units
0682 Silencer Threaded G 1/2 Male - - 12bar Stainless Steel -20°C Male +180°C G 1/2 in -
RS Stock No. 722-261
Mfr. Part No.0673 00 19
BrandLegris
SGD4.563
Each (In a Pack of 10)
units
0673 Silencer Threaded M5 x 0.8 Male - - 12bar Brass, Sintered Bronze -20°C Male +150°C Metric M5 x 0.8 -
RS Stock No. 456-4889
Mfr. Part No.0677 00 17
BrandLegris
SGD4.758
Each (In a Pack of 10)
units
0677 Silencer Threaded G 3/8 Male - - 12bar Brass -20°C Male +120°C G 3/8 in -
RS Stock No. 454-7395
Mfr. Part No.0674 00 13
BrandLegris
SGD4.55
Each
units
0674 Silencer Threaded G 1/4 Male - - 10bar PE -10°C Male +80°C G 1/4 in Polymer
RS Stock No. 456-4873
Mfr. Part No.0677 00 13
BrandLegris
SGD3.136
Each (In a Pack of 10)
units
0677 Silencer Threaded G 1/4 Male - - 12bar Brass -20°C Male +120°C G 1/4 in -
RS Stock No. 456-4839
Mfr. Part No.0682 00 13
BrandLegris
SGD25.46
Each
units
0682 Silencer Threaded G 1/4 Male - - 12bar Stainless Steel -20°C Male +180°C G 1/4 in -
RS Stock No. 619-2105
BrandLegris
SGD32.794
Each (In a Pack of 5)
units
0670 Silencer Threaded G 1 Male - - 12bar Sintered Bronze -20°C Male +150°C G 1 in -
RS Stock No. 454-7424
Mfr. Part No.0674 00 27
BrandLegris
SGD27.34
Each
units
0674 Silencer Threaded G 3/4 Male - - 10bar PE -10°C Male +80°C G 3/4 in Polymer
RS Stock No. 454-7418
Mfr. Part No.0674 00 21
BrandLegris
SGD8.91
Each
units
0674 Silencer Threaded G 1/2 Male - - 10bar PE -10°C Male +80°C G 1/2 in Polymer
RS Stock No. 619-2082
BrandLegris
SGD9.89
Each (In a Pack of 10)
units
0670 Silencer Threaded G 1/2 Male - - 12bar Sintered Bronze -20°C Male +150°C G 1/2 in -
RS Stock No. 456-4895
Mfr. Part No.0677 00 21
BrandLegris
SGD6.635
Each (In a Pack of 10)
units
0677 Silencer Threaded G 1/2 Male - - 12bar Brass -20°C Male +120°C G 1/2 in -
RS Stock No. 454-7373
Mfr. Part No.0674 00 10
BrandLegris
SGD4.12
Each
units
0674 Silencer Threaded G 1/8 Male - - 10bar PE -10°C Male +80°C G 1/8 in Polymer
RS Stock No. 724-942
BrandLegris
SGD10.69
Each
units
0672 Silencer Threaded G 1/4 Male - - 12bar Brass, Sintered Bronze -20°C Male +150°C G 1/4 in -
RS Stock No. 724-936
BrandLegris
SGD9.25
Each
units
0672 Silencer Threaded G 1/8 Male - - 12bar Brass, Sintered Bronze -20°C Male +150°C G 1/8 in -
RS Stock No. 456-4845
Mfr. Part No.0682 00 17
BrandLegris
SGD34.59
Each
units
0682 Silencer Threaded G 3/8 Male - - 12bar Stainless Steel -20°C Male +180°C G 3/8 in -
RS Stock No. 619-2127
Mfr. Part No.0682 00 27
BrandLegris
SGD78.54
Each
units
0682 Silencer Threaded G 3/4 Male - - 12bar Stainless Steel -20°C Male +180°C G 3/4 in -
RS Stock No. 722-283
Mfr. Part No.0670 00 13
BrandLegris
SGD6.50
Each (In a Pack of 10)
units
0670 Silencer Threaded G 1/4 Male - - 12bar Sintered Bronze -20°C Male +150°C G 1/4 in -
RS Stock No. 619-2240
BrandLegris
SGD7.03
Each (In a Pack of 10)
units
0670 Silencer Threaded G 3/8 Male - - 12bar Sintered Bronze -20°C Male +150°C G 3/8 in -
RS Stock No. 619-2098
BrandLegris
SGD18.142
Each (In a Pack of 5)
units
0670 Silencer Threaded G 3/4 Male - - 12bar Sintered Bronze -20°C Male +150°C G 3/4 in -