GrandMfg® Brass Oil level sight glass winow Plugs


Material Body:   Brass or brass free of lead.

O-Ring: Viton,FKM,FPM,NBR, Aramid gasket and Copper seal

Glass Thickness: 2mm to 8 mm

Glass Type: Natural Glass,Tempered Glass and Borosilicate Glass

Glass shape: Flat glass and Domed glass

Resist Tempreature Range:-40'C to 180'C

Pressure Range:  5-50 Bar(1MPa to 5 MPa).

Thread type:NPT,NPTF,UNC,UNF,Metric and BSP(G thread)

Reflectors: Stainless Steel 304 Reflector /Same as body brass as a whole sight glass.

(Any type you can chose with reflector or without Reflector,  You also can add float ball.)

Size: Below you will get the size you wanted.Another size is okay.OEM are welcome.

Allpication:  Pump,Receivers,Hydraulic tanks,Gearboxes,Speed Reducer,Gear unit,Worm gearbox, helical gear boxes, variable speed motor,auotomotive Worm gearboxes,Compressor and Power Transimission.

 

Brass Oil Sight Glass(Metric Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) SW(mm) Max MPa/Temperateru
GM-BM10 M10 M10x1 7 7 14 15 6 13 1MPa  /  Metric and BSP Thread DIN3869-ED Gaskets for Sealing.  Below Zero 25 to 180 Centigrade(FKM/Viton)
GM-BM12 M12 M12x1.5 7 7 14 17 8 15
GM-BM14 M14 M14x1.5 7 7 14 19 10 17
GM-BM16 M16 M16x1.5 7.5 7 14.5 22 11 19
GM-BM20 M20 M20x1.5 8 7 15 26 14 22
GM-BM22 M22 M22x1.5 8 8 16 28 15 23
GM-BM24 M24 M24x1.5 8 9 17 30 17 24
GM-BM26 M26 M26x1.5 9 9 18 31 20 26
GM-BM27 M27 M27x1.5 9 9 18 32 20 29
GM-BM30 M30 M30x1.5 10 9 19 37 22 33
GM-BM33 M33 M33x1.5 11 9 20 40 24 36
GM-BM42 M42 M42x1.5 12 10 22 52 31 46
GM-BM60 M60 M60x2 13.5 10.5 24 71 46 62

 

 

Brass Oil Sight Glass(BSP Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) SW(mm) Max MPa/Temperateru
GM-BG18 1/8" G1/8" 8 8 16 14 6 13 1MPa  /  Metric and BSP Thread DIN3869-ED Gaskets for Sealing.  Below Zero 25 to 180 Centigrade(FKM/Viton)
GM-BG14 1/4" G1/4" 8 9 17 18 8 17
GM-BG38 3/8" G 3/8" 7.5 7 14.5 22 10 19
GM-BG12 1/2" G 1/2" 8 7 15 26 14 23
GM-BG34 3/4" G 3/4" 9 9 18 32 20 26
GM-BG10 1" G 1" 11 9 20 40 24 36
GM-BG114 1-1/4" G1-1/4" 12 9 21 50 35 42
GM-BG112 1-1/2" G1-1/2" 13 10 23 56 39 48
GM-BG200 2" G 2" 13 10 23 70 48 60

 

 

Hexagon Brass Oil Sight Glass(Metric Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) SW(mm) Max Mpa Temperature
GM-HBM10 M10 M10x1 7 7 14 6 13 1MPa Metric and BSP Thread DIN3869-ED Gaskets for Sealing.  Below Zero 25 to 180 Centigrade(FKM/Viton)
GM-HBM12 M12 M12x1.5 7 7 14 8 17
GM-HBM14 M14 M14x1.5 7 7 14 10 19
GM-HBM16 M16 M16x1.5 7 7 14 11 22
GM-HBM20 M20 M20x1.5 8 7 15 16 26
GM-HBM22 M22 M22x1.5 8 7 15 17 28
GM-HBM24 M24 M24x1.5 8 8 16 17 30
GM-HBM26 M26 M26x1.5 9 8 17 20 33
GM-HBM27 M27 M27x1.5 9 8 17 20 33
GM-HBM30 M30 M30x1.5 10 9 19 23 36
GM-HBM33 M33 M33x1.5 11 10 22 25 40
GM-HBM42 M42 M42x1.5 12 10 22 31 52
GM-HBM60 M60 M60x2 13 10 23 46 71

 

 

Hexagon Brass Oil Sight Glass(BSP Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) SW(mm) Max Mpa Temperature
GM-HBG18 1/8" G 1/8" 7 7 14 8 13 1MPa Metric and BSP Thread DIN3869-ED Gaskets for Sealing.  Below Zero 25 to 180 Centigrade(FKM/Viton)
GM-HBG14 1/4" G 1/4" 7 7 14 8 17
GM-HBG38 3/8" G 3/8" 7 7 14 11 22
GM-HBG12 1/2" G 1/2" 8 7 15 16 26
GM-HBG34 3/4" G 3/4" 9 8 17 20 33
GM-HBG10 1" G 1" 12 10 22 25 40
GM-HBG114 1-1/4" G1-1/4" 14 10 24 35 50
GM-HBG112 1-1/2" G1-1/2" 14 11 25 39 55
GM-HBG20 2" G2" 14 12 26 48 71

 

 

Circular Brass Oil Sight Glass With Relfector(BSP & Metric Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) H(mm) Max MPa/Temperateru
GM-CBM16 M16 M16x1.5 2.6 4 8 9 15 22 1MPa  /  Below Zero 30 to 180 Centigrade(FKM/FPM/Viton).The glass can make red marking.The reflector can paint white 
GM-CBM18 M18 M18x1.5 2.6 4 8 9 15 22
GM-CBM20 M20 M20x1.5 2.6 4 8 11.5 17.5 26
GM-CBM22 M22 M22x1.5 2.6 4 8 11.5 17.5 26
GM-CBM24 M24 M24x1.5 2.6 4 8 16 22 30
GM-CBM26 M26 M26x1.5 2.6 4 8 16 22 32
GM-CBM27 M27 M27x1.5 2.6 4 8 16 22 32
GM-CBM30 M30 M30x1.5 2.6 4.5 8.5 20 26 36
GM-CBM30D M30 M30x2 2.6 4.5 8.5 20 26 36
GM-CBM33 M33 M33x1.5 2.6 4.5 9 22 28 38
GM-CBM33D M33 M33x2 2.6 4.5 9 22 28 38
GM-CBM35 M35 M35x1.5 2.6 4.5 9 25 31 42
GM-CBM36 M36 M36x1.5 2.6 4.5 9 25 31 42
GM-CBM42 M42 M42x1.5 3.2 4.5 10 28 34 48
GM-CBM48 M48 M48x1.5 3.2 5 11 33 39 55
GM-CBM60 M60 M60x2 4.5 5.5 11 43 49 69
 
GM-CBG38 3/8" G3/8" 2.6 4 8 9 15 22
GM-CBG12 1/2" G1/2" 2.6 4 8 11.5 17.5 26
GM-CBG34 3/4" G3/4" 2.6 4 8 16 22 32
GM-CBG100 1" G1" 2.6 4.5 9 22 28 38
GM-CBG114 1 1/4" G1 1/4" 3.2 4.5 10 28 36 48
GM-CBG112 1 1/2" G1 1/2" 3.2 5 11 33 39 55
GM-CBG20 2" G2" 4.5 5.5 11 43 49 69
GM-CBG212 2 1/2" G2 1/2" 4.5 6.5 11.5 57 64 78

 

 

Circular Brass Oil Sight Glass With White Relfector(BSP & Metric Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) H(mm) Max MPa/Temperateru
GM-CBM16 M16 M16x1.5 2.6 4 8 9 15 22 1MPa  /  Below Zero 40 to 200 Centigrade.The glass can make red marking.The reflector can paint white 
GM-CBM18 M18 M18x1.5 2.6 4 8 9 15 22
GM-CBM20 M20 M20x1.5 2.6 4 8 11.5 17.5 26
GM-CBM22 M22 M22x1.5 2.6 4 8 11.5 17.5 26
GM-CBM24 M24 M24x1.5 2.6 4 8 16 22 30
GM-CBM26 M26 M26x1.5 2.6 4 8 16 22 32
GM-CBM27 M27 M27x1.5 2.6 4 8 16 22 32
GM-CBM30 M30 M30x1.5 2.6 4.5 8.5 20 26 36
GM-CBM30D M30 M30x2 2.6 4.5 8.5 20 26 36
GM-CBM33 M33 M33x1.5 2.6 4.5 9 22 28 38
GM-CBM33D M33 M33x2 2.6 4.5 9 22 28 38
GM-CBM35 M35 M35x1.5 2.6 4.5 9 25 31 42
GM-CBM36 M36 M36x1.5 2.6 4.5 9 25 31 42
GM-CBM42 M42 M42x1.5 3.2 4.5 10 28 34 48
GM-CBM48 M48 M48x1.5 3.2 5 11 33 39 55
GM-CBM60 M60 M60x2 4.5 5.5 11 43 49 70
 
GM-CBG38 3/8" G3/8" 2.6 4 8 9 15 22
GM-CBG12 1/2" G1/2" 2.6 4 8 11.5 17.5 26
GM-CBG34 3/4" G3/4" 2.6 4 8 16 22 32
GM-CBG10 1" G1" 2.6 4.5 9 22 28 38
GM-CBG114 1 1/4" G1 1/4" 3.2 4.5 10 28 36 48
GM-CBG112 1 1/2" G1 1/2" 3.2 5 11 33 39 55
GM-CBG20 2" G2" 4.5 5.5 11 43 49 69
GM-CBG212 2 1/2" G2 1/2" 4.5 6.5 11.5 57 64 78

 

 

Hexagon Brass Oil Sight glass (NPT Thread)
Item No. Size(mm) A(mm) B(mm) C(mm) D(mm) E(mm) SW(mm) Max Mpa Temperature
GM-BN38 3/8" NPT 3/8" 16 11 27 11 19 1MPa Below Zero 25 to 180 Centigrade(FKM/Viton)
GM-BN12 1/2" NPT 1/2" 16.5 11.5 28 13 24
GM-BN34 3/4" NPT 3/4" 17 12 29 19 28
GM-BN10 1" NPT 1" 20 12 32 25 35
GM-BN114 1-1/4" NPT1-1/4" 20 12 32 35 48
GM-BN112 1-1/2" NPT1-1/2" 22 13 35 39 56
GM-BN20 2" NPT 2" 23 13 36 48 68

 

Domed Hexagon Oil Sight Glass with locking Nut (NPT,BSP & Metric Thread)
Item No. Size(mm) A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) SW(mm) Temperature
GM-HDN14 1/4" NPT 1/4" 12 16 9 12 10 21 Metric and BSP Thread DIN38-ED Gaskets for Sealing.With Borosilicate Glass Below Zero 25 to 200 Centigrade
GM-HDN38 3/8" NPT 3/8" 13 16 11 16 13 24
GM-HDN12 1/2" NPT 1/2" 14 16 13 18 13 26
GM-HDN34 3/4" NPT 3/4" 17 16 20 25 15 36
GM-HDN10 1" NPT 1" 20 16 25 30 15 40
GM-HDG14 1/4" G1/4" 12 16 9 12 10 21
GM-HDG38 3/8" G3/8" 10 16 11 16 13 24
GM-HDG12 1/2" G1/2" 10 16 13 18 13 26
GM-HDG34 3/4" G3/4" 12 16 20 25 15 36
GM-HDG10 1" G1" 12 16 25 30 15 40
GM-HDM12 M12 M12x1 10 16 9 12 10 21
GM-HDM12 M12 M12x1.5 10 16 9 12 10 21
GM-HDM14 M14 M14x1.5 10 16 9 12 10 21
GM-HDM16 M16 M16x1.5 10 16 11 16 13 24
GM-HDM20 M20 M20x1.5 10 16 12 18 13 26
GM-HDM22 M22 M22x1.5 10 16 13 18 13 26
GM-HDM26 M26 M26x1.5 11 16 19 25 14 36
GM-HDM27 M27 M27x1.5 11 16 20 25 15 36
GM-HDM33 M33 M33x1.5 11 16 25 30 15 40

Domed Hexagon Oil Sight Glass(NPT,BSP & Metric Thread)
Item No. Size(mm) A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) SW(mm) Temperature
GM-HDN14 1/4" NPT 1/4" 12 16 9 12 10 21 Metric and BSP Thread DIN38-ED Gaskets for Sealing.With Borosilicate Glass Below Zero 25 to 200 Centigrade
GM-HDN38 3/8" NPT 3/8" 13 16 11 16 13 24
GM-HDN12 1/2" NPT 1/2" 14 16 13 18 13 26
GM-HDN34 3/4" NPT 3/4" 17 16 20 25 15 36
GM-HDN10 1" NPT 1" 20 16 25 30 15 40
GM-HDG14 1/4" G1/4" 12 16 9 12 10 21
GM-HDG38 3/8" G3/8" 10 16 11 16 13 24
GM-HDG12 1/2" G1/2" 10 16 13 18 13 26
GM-HDG34 3/4" G3/4" 12 16 20 25 15 36
GM-HDG10 1" G1" 12 16 25 30 15 40
GM-HDM12 M12 M12x1 10 16 9 12 10 21
GM-HDM12 M12 M12x1.5 10 16 9 12 10 21
GM-HDM14 M14 M14x1.5 10 16 9 12 10 21
GM-HDM16 M16 M16x1.5 10 16 11 16 13 24
GM-HDM20 M20 M20x1.5 10 16 12 18 13 26
GM-HDM22 M22 M22x1.5 10 16 13 18 13 26
GM-HDM26 M26 M26x1.5 11 16 19 25 14 36
GM-HDM27 M27 M27x1.5 11 16 20 25 15 36
GM-HDM33 M33 M33x1.5 11 16 25 30 15 40

 

Brass Oil Sight Glass (UNF/UNEF/UN/UNS Thread)
Item No. Size A(mm) B(mm) C(mm) D(mm) E(mm) SW(mm) Max Mpa Temperature
GM-BU12 1/2" UNF1/2"-20 8 9 17 6 14 1MPa Below Zero 25 to 200 Centigrade(SAE-O-Ring)
GM-BU916 9/16" UNF9/16-18 8 9 17 8 17
GM-BU34 3/4" UNF3/4"-16 8 9 17 12 24
GM-BU78 7/8" UNF7/8"-14 9 10 18 15 27
GM-BU118 1-1/8" UNF 1-1/8"-12 6.5 3.5 11 19 32
GM-BU118 1-1/8"-18 UNEF 1-1/8"-18 11 6.5 17.5 22 36
GM-BU114 1-1/4" UNF 1-1/4"-12 17 6 23 22 40
GM-BU1516 1-5/16" UN1-5/16"-12 10 12 22 20 38/40
GM-BU112 1-1/2"-18 UNEF1-1/2"-18 8 13 21 25 38
GM-BU178 1-7/8" UN1-7/8"-12 13 14 27 32 56

 

aluminum

fused sight glass

Stainless steel

steel sight glass