STS Series - Silicone Tapered Stoppers

  • Tapered Design to Fit a Variety of Hole Diameters
  • Compressible for Better Sealing of Both Threaded and Non-Threaded Holes

Product Description:

Our Silicone Tapered Stopper (STS) product line is an industry standard for general plugging applications. With many sizes available, holes from 0.020" to 4.710" in diameter can easly be plugged. Our high temperature silicone is specially formulated to ensure reusability and reliability during masking.

Typical Applications:

  • Used as a plug in both threaded and non-threaded holes and in combination with hardware to seal off large cavities.

Helpful Hints:

  • Make sure that the major diameter of the plug is at least 15% larger than the hole diameter.
  • The minor diameter should be at least 15% smaller than the hole diameter.
  • When masking off both the front and back of a cavity, it is possible to combine two (STS) with hardware to create a liquid tight mask that resists blow-out. Call for details.
  • Silicone Tapered Stoppers are not recommended for exposure to aggressive chemicals or hydrocarbons.
Filter
Part Number MJD - IN MND - IN MPD - IN L - IN MJD - MM MND - MM MPD - MM L - MM PCS/BAG COLOR Unit Purchase
0.062t X 0.016b X 0.625"L Bla"
STS 0062-B
0.062 0.016 0.039 0.625 1.6 0.4 1.0 15.9 1000 BLACK
Buy 1 $42.518/1000 Per BAG
Buy 5 $39.526/1000 Per BAG
In Stock
0.078t X 0.020b X 1.000"L Blu
STS 0078X1000-U
0.078 0.020 0.049 1.000 2.0 0.5 1.2 25.4 1000 BLUE
Buy 1 $60.578/1000 Per BAG
Buy 5 $56.347/1000 Per BAG
In Stock
0.100t X 0.031b X 0.625"L Yel"
STS 0100X0625-L
0.100 0.031 0.066 0.625 2.5 0.8 1.7 15.9 1000 Yellow
Buy 1 $27.038/1000 Per BAG
Buy 5 $25.181/1000 Per BAG
In Stock
0.100t X 0.031b X 1.000"L Yel"
STS 0100X1000-L
0.100 0.031 0.066 1.000 2.5 0.8 1.7 25.4 1000 Yellow
Buy 1 $29.928/1000 Per BAG
Buy 5 $27.864/1000 Per BAG
In Stock
0.125t X 0.062b X 0.625"L Pin"
STS 0125-N
0.125 0.062 0.094 0.625 3.2 1.6 2.4 15.9 1000 PINK
List Price $24.974/1000 Per BAG
Buy 1 $24.970/1000 Per BAG
Buy 5 $23.220/1000 Per BAG
In Stock
0.177t X 0.060b X 0.590"L Pur"
STS 0177X0591-P
0.177 0.060 0.119 0.591 4.5 1.5 3.0 15.0 1000 Purple
Buy 1 $30.440/1000 Per BAG
Buy 5 $28.277/1000 Per BAG
In Stock
0.187t X 0.109b X 0.394"L Sil"
STS 0187X0394
0.187 0.109 0.148 0.394 4.7 2.8 3.8 10.0 1000 CLEAR
Buy 1 $30.440/1000 Per BAG
Buy 5 $28.277/1000 Per BAG
In Stock
0.187t X 0.062b X 0.625"l Wh"
STS 0187X0625-W
0.187 0.062 0.125 0.750 4.7 1.6 3.1 19.0 1000 White
List Price $30.444/1000 Per BAG
Buy 1 $30.440/1000 Per BAG
Buy 5 $28.277/1000 Per BAG
In Stock
0.187t X 0.062b X 0.750"L Rus"
STS 0187X0750-F
0.187 0.062 0.125 0.750 4.7 1.6 3.1 19.0 1000 RUSTY
Buy 1 $33.437/1000 Per BAG
Buy 5 $31.063/1000 Per BAG
In Stock
0.188t X 0.047b X 2.200"L Gre"
STS 0188X2200-Y
0.188 0.047 0.118 2.200 4.8 1.1 3.0 55.9 1000 GRAY
Buy 1 $56.140/1000 Per BAG
Buy 5 $52.219/1000 Per BAG
In Stock
0.197t X 0.049b X 1.100"L Gre"
STS 0197-G
0.197 0.049 0.123 1.100 5.0 1.2 3.1 27.9 1000 GREEN
Buy 1 $43.240/1000 Per BAG
Buy 5 $40.248/1000 Per BAG
In Stock
0.200t X 0.062b X 0.750"L Blu"
STS 0200-U
0.200 0.062 0.131 0.750 5.1 1.6 3.3 19.0 1000 BLUE
Buy 1 $36.430/1000 Per BAG
Buy 5 $33.850/1000 Per BAG
In Stock
0.216t X 0.047b X 1.500"L Pin"
STS 0216-N
0.216 0.047 0.132 1.500 5.5 1.2 3.3 38.1 1000 PINK
Buy 1 $53.148/1000 Per BAG
Buy 5 $49.433/1000 Per BAG
In Stock
0.250t X 0.125b X 0.750"L Gre"
STS 0250X0750-G
0.250 0.125 0.188 0.750 6.4 3.2 4.8 19.1 1000 GREEN
List Price $43.241/1000 Per BAG
Buy 1 $43.240/1000 Per BAG
Buy 5 $40.248/1000 Per BAG
In Stock
0.250t X 0.125b X 1.000"L Rus"
STS 0250X1000-F
0.250 0.125 0.188 1.000 6.4 3.2 4.8 25.4 1000 RUSTY
Buy 1 $53.148/1000 Per BAG
Buy 5 $49.433/1000 Per BAG
In Stock
0.276t X 0.118b X 0.787"L Yel"
STS 0276X0787-L
0.276 0.118 0.197 0.787 7.0 3.0 5.0 20.0 1000 Yellow
Buy 1 $50.258/1000 Per BAG
Buy 5 $46.750/1000 Per BAG
In Stock
0.315t X 0.157b X 0.787"L Red"
STS 0315X0787-R
0.315 0.157 0.236 0.787 8.0 4.0 6.0 20.0 1000 Red
Buy 1 $54.696/1000 Per BAG
Buy 5 $50.878/1000 Per BAG
In Stock
0.343t X 0.187b X 0.625"L Blu"
STS 0343X0625-U
0.343 0.187 0.265 0.625 8.7 4.7 6.7 15.9 1000 BLUE
Buy 1 $54.696/1000 Per BAG
Buy 5 $50.878/1000 Per BAG
In Stock
0.343t X 0.187b X 1.000"L Rus"
STS 0343X1000-F
0.343 0.187 0.265 1.000 8.7 4.7 6.7 25.4 1000 RUSTY
List Price $75.852/1000 Per BAG
Buy 1 $75.850/1000 Per BAG
Buy 5 $70.589/1000 Per BAG
In Stock
0.354 T X 0.177 B X 0.984" LS"
STS 0354X0984-I
0.354 0.177 0.266 0.984 9.0 4.5 6.7 25.0 1000 IVORY
Buy 1 $80.186/1000 Per BAG
Buy 5 $74.614/1000 Per BAG
In Stock
0.375t X 0.250b X 0.500"L Yel"
STS 0375X0500-L
0.375 0.250 0.313 0.500 9.5 6.4 7.9 12.7 500 Yellow
Buy 1 $34.159/500 Per BAG
Buy 5 $31.786/500 Per BAG
In Stock
0.375t X 0.250b X 0.750"L Yel"
STS 0375X0750-L
0.375 0.250 0.313 0.750 9.5 6.4 8.0 19.1 500 Yellow
Buy 1 $37.926/500 Per BAG
Buy 5 $35.294/500 Per BAG
In Stock
0.375t X 0.125b X 1.250"L Yel"
STS 0375X1250-L
0.375 0.125 0.250 1.250 9.5 3.2 6.4 31.8 500 Yellow
List Price $41.744/500 Per BAG
Buy 1 $41.740/500 Per BAG
Buy 5 $38.803/500 Per BAG
In Stock
0.393t X 0.236b X 0.787"L Sil"
STS 0393-U
0.393 0.236 0.315 0.787 10.0 6.0 8.0 20.0 500 BLUE
Buy 1 $41.796/500 Per BAG
Buy 5 $38.855/500 Per BAG
In Stock
0.394t X 0.197b X 1.890"L Whi"
STS 0394-W
0.394 0.197 0.296 1.890 10.0 5.0 7.5 48.0 500 White
Buy 1 $81.010/500 Per BAG
Buy 5 $75.336/500 Per BAG
In Stock
0.433t X 0.315b X 1.063"L Gre"
STS 0433X1063-G
0.433 0.315 0.374 1.063 11.0 8.0 9.5 27.0 500 GREEN
Buy 1 $81.630/500 Per BAG
Buy 5 $75.904/500 Per BAG
In Stock
0.437t X 0.250b X 1.000"L Rus"
STS 0437-F
0.437 0.250 0.344 1.000 11.1 6.4 8.7 25.4 500 RUSTY
Buy 1 $56.966/500 Per BAG
Buy 5 $52.993/500 Per BAG
In Stock
0.438t X 0.344b X 0.688"L Bla"
STS 0438-B
0.438 0.344 0.391 0.688 11.1 8.7 10.0 17.5 500 BLACK
Buy 1 $54.180/500 Per BAG
Buy 5 $50.362/500 Per BAG
In Stock
0.472t X 0.354b X 0.748"L Red"
STS 0472-R
0.472 0.354 0.413 0.748 12.0 9.0 10.5 19.0 500 Red
Buy 1 $78.170/500 Per BAG
Buy 5 $72.704/500 Per BAG
In Stock
0.473t X 0.787L Silicone Tape"
STS 0473X0787-Y
0.473 0.312 0.393 0.787 12.0 8.0 10.0 20.0 500 GRAY
Buy 1 $77.760/500 Per BAG
Buy 5 $72.343/500 Per BAG
In Stock
0.487t X 0.354b X 0.748"L Sil"
STS 0487
0.487 0.354 0.421 0.748 12.4 9.0 10.7 19.0 500 CLEAR
Buy 1 $82.300/500 Per BAG
Buy 5 $76.523/500 Per BAG
In Stock
0.500t X 0.313b X 0.813"L Bro"
STS 0500X0813-Z
0.500 0.313 0.407 0.813 12.7 8.0 10.3 20.7 250 BROWN
Buy 1 $40.248/250 Per BAG
Buy 5 $37.441/250 Per BAG
In Stock
0.500t X 0.312b X 1.000"L Bro"
STS 0500X1000-Z
0.500 0.312 0.406 1.000 12.7 7.9 10.3 25.4 250 BROWN
Buy 1 $42.498/250 Per BAG
Buy 5 $39.526/250 Per BAG
In Stock
0.500t X 0.125b X 2.000"L Bro"
STS 0500X2000-Z
0.500 0.125 0.313 2.000 12.7 3.2 7.9 50.8 250 BROWN
Buy 1 $50.485/250 Per BAG
Buy 5 $46.956/250 Per BAG
In Stock
0.512t X 0.354b X 0.984"L Bla"
STS 0512X0984-B
0.512 0.354 0.433 0.984 13.0 9.0 11.0 25.0 250 BLACK
Buy 1 $48.110/250 Per BAG
Buy 5 $44.737/250 Per BAG
In Stock
0.562t X 0.313b X 1.125"L Sil"
STS 0562-F
0.562 0.313 0.438 1.125 14.3 8.0 11.1 28.6 250 RUSTY
List Price $50.104/250 Per BAG
Buy 1 $50.100/250 Per BAG
Buy 5 $46.595/250 Per BAG
In Stock
0.563t X 0.375b X 1.000"L Blu"
STS 0563-U
0.563 0.375 0.469 1.000 14.3 9.5 11.9 25.4 250 BLUE
Buy 1 $50.100/250 Per BAG
Buy 5 $46.595/250 Per BAG
In Stock
0.590t X 0.393b X 1.000"L Pur"
STS 0590-P
0.590 0.393 0.492 1.000 15.0 10.0 12.5 25.4 250 Purple
Buy 1 $51.239/250 Per BAG
Buy 5 $47.658/250 Per BAG
In Stock
0.591t X 0.433"b X 0.787"L Br"
STS 0591-Z
0.591 0.433 0.512 0.787 15.0 11.0 13.0 20.0 250 BROWN
Buy 1 $48.937/250 Per BAG
Buy 5 $45.511/250 Per BAG
In Stock
0.625t X 0.437b X 0.813"L Gre"
STS 0625-G
0.625 0.437 0.531 0.813 15.9 11.1 13.5 20.7 250 GREEN
Buy 1 $53.148/250 Per BAG
Buy 5 $49.433/250 Per BAG
In Stock
0.656t X 0.500b X 1.000"L Sil"
STS 0656
0.656 0.500 0.578 1.000 16.7 12.7 14.7 25.4 250 CLEAR
List Price $64.552/250 Per BAG
Buy 1 $64.550/250 Per BAG
Buy 5 $60.042/250 Per BAG
In Stock
0.669t X 0.510b X 1.000"L Red"
STS 0669-R
0.669 0.510 0.590 1.000 17.0 13.0 15.0 25.4 250 Red
Buy 1 $69.918/250 Per BAG
Buy 5 $65.016/250 Per BAG
In Stock
0.687t X 0.437b X 1.000"L Sil"
STS 0687
0.687 0.437 0.562 1.000 17.4 11.1 14.3 25.4 250 CLEAR
Buy 1 $69.918/250 Per BAG
Buy 5 $65.016/250 Per BAG
In Stock
0.709t X 0.551b X 0.787"L Sil"
STS 0709X0787
0.709 0.551 0.630 0.787 18.0 14.0 16.0 20.0 250 CLEAR
Buy 1 $64.170/250 Per BAG
Buy 5 $59.670/250 Per BAG
In Stock
0.748t X 0.550b X 1.000"L Bla"
STS 0748-B
0.748 0.550 0.649 1.000 19.0 14.0 16.5 25.4 250 BLACK
List Price $71.002/250 Per BAG
Buy 1 $71.000/250 Per BAG
Buy 5 $66.027/250 Per BAG
In Stock
0.787t X 0.630b X 1.000"L Red"
STS 0787-R
0.787 0.630 0.709 1.000 20.0 16.0 18.0 25.4 100 Red
Buy 1 $35.088/100 Per BAG
Buy 5 $32.632/100 Per BAG
In Stock
0.812t X 0.625b X 1.000"L Sil"
STS 0812
0.812 0.625 0.719 1.000 20.6 15.9 18.2 25.4 100 CLEAR
Buy 1 $39.949/100 Per BAG
Buy 5 $37.152/100 Per BAG
In Stock
0.827t X 0.630b X 0.984"L Sil"
STS 0827X0984-R
0.827 0.630 0.729 0.984 21.0 16.0 18.5 25.0 100 Red
Buy 1 $40.795/100 Per BAG
Buy 5 $37.936/100 Per BAG
In Stock
0.925t X 0.750b X 1.000"L Sil"
STS 0925
0.925 0.750 0.838 1.000 23.5 19.1 21.3 25.4 100 CLEAR
Buy 1 $46.739/100 Per BAG
Buy 5 $43.468/100 Per BAG
In Stock
0.938t X 0.708b X 1.000"L Yel"
STS 0938-L
0.938 0.708 0.823 1.000 23.8 18.0 20.9 25.4 100 Yellow
Buy 1 $46.739/100 Per BAG
Buy 5 $43.468/100 Per BAG
In Stock
0.945t X 0.756b X 0.750"L Bla"
STS 0945-B
0.945 0.756 0.851 0.750 24.0 19.2 21.6 19.1 100 BLACK
Buy 1 $44.128/100 Per BAG
Buy 5 $41.043/100 Per BAG
In Stock
0.946 T X 0.709 B X 1.181" LS"
STS 0946
0.946 0.709 0.828 1.181 24.0 18.0 21.0 30.0 100 CLEAR
List Price $51.332/100 Per BAG
Buy 1 $51.330/100 Per BAG
Buy 5 $47.740/100 Per BAG
In Stock
0.984t X 0.787b X 0.885"L Sil"
STS 0984X0885
0.984 0.787 0.886 0.885 25.0 20.0 22.5 22.5 100 CLEAR
Buy 1 $46.038/100 Per BAG
Buy 5 $42.818/100 Per BAG
In Stock
0.990t X 0.880b X 0.795"L Sil"
STS 0990
0.990 0.880 0.935 0.795 25.1 22.4 23.7 20.2 100 CLEAR
Buy 1 $45.718/100 Per BAG
Buy 5 $42.518/100 Per BAG
In Stock
1.024t X 0.787b X 1.000"L Sil"
STS 1024
1.024 0.787 0.906 1.000 26.0 20.0 23.0 25.4 100 CLEAR
List Price $56.853/100 Per BAG
Buy 1 $56.850/100 Per BAG
Buy 5 $52.869/100 Per BAG
In Stock
1.062t X 0.866b X 0.984"L Sil"
STS 1062X0984
1.062 0.866 0.964 0.984 27.0 22.0 24.5 25.0 100 CLEAR
Buy 1 $58.070/100 Per BAG
Buy 5 $54.005/100 Per BAG
In Stock
1.063t X 0.905b X 1.000"L Sil"
STS 1063
1.063 0.905 0.984 1.000 27.0 23.0 25.0 25.4 100 CLEAR
Buy 1 $57.689/100 Per BAG
Buy 5 $53.654/100 Per BAG
In Stock
1.102t X 0.945b X 1.000"L Sil"
STS 1102X1000
1.102 0.945 1.023 1.000 28.0 24.0 26.0 25.4 100 CLEAR
Buy 1 $62.250/100 Per BAG
Buy 5 $57.895/100 Per BAG
In Stock
1.102t X 0.750b X 2.000"L Sil"
STS 1102X2000
1.102 0.750 0.926 2.000 28.0 19.1 23.5 50.8 100 CLEAR
Buy 1 $109.877/100 Per BAG
Buy 5 $102.189/100 Per BAG
In Stock
1.220t X 0.984b X 1.181"L Sil"
STS 1220X1181
1.220 0.984 1.102 1.181 31.0 25.0 28.0 30.0 100 CLEAR
Buy 1 $83.520/100 Per BAG
Buy 5 $77.668/100 Per BAG
In Stock
1.260t X 1.024b X 1.000"L Sil"
STS 1260
1.260 1.024 1.142 1.000 32.0 26.0 29.0 25.4 100 CLEAR
Buy 1 $78.958/100 Per BAG
Buy 5 $73.427/100 Per BAG
In Stock
1.325 (33.7mm) Major Dia. X 1"
STS 1325X0835
1.325 1.140 1.233 0.835 33.7 29.0 31.3 21.2 100 CLEAR
Buy 1 $83.550/100 Per BAG
Buy 5 $77.699/100 Per BAG
In Stock
1.338t X 1.063b X 1.000"L Sil"
STS 1338
1.338 1.063 1.200 1.000 34.0 27.0 30.5 25.4 100 CLEAR
Buy 1 $90.785/100 Per BAG
Buy 5 $84.428/100 Per BAG
In Stock
1.375t X 1.180b X 1.000"L Sil"
STS 1375
1.375 1.180 1.278 1.000 35.0 30.0 32.4 25.4 100 CLEAR
Buy 1 $104.270/100 Per BAG
Buy 5 $96.977/100 Per BAG
In Stock
1.456t X 1.180b X 1.000"L Sil"
STS 1456
1.456 1.180 1.318 1.000 37.0 30.0 33.5 25.4 100 CLEAR
Buy 1 $103.995/100 Per BAG
Buy 5 $96.719/100 Per BAG
In Stock
1.535t X 1.220b X 1.000"L Sil"
STS 1535
1.535 1.220 1.378 1.000 39.0 31.0 35.0 25.4 50 CLEAR
Buy 1 $58.267/50 Per BAG
Buy 5 $54.180/50 Per BAG
In Stock
1.614t X 1.300b X 1.000"L Sil"
STS 1614
1.614 1.300 1.457 1.000 41.0 33.0 37.0 25.4 50 CLEAR
Buy 1 $66.977/50 Per BAG
Buy 5 $62.281/50 Per BAG
In Stock
1.693t X 1.417b X 1.000"L Sil"
STS 1693
1.693 1.417 1.555 1.000 43.0 36.0 39.5 25.4 50 CLEAR
List Price $76.203/50 Per BAG
Buy 1 $76.200/50 Per BAG
Buy 5 $70.857/50 Per BAG
In Stock
1.732t X 1.417b X 1.575"L Sil"
STS 1732X1575
1.732 1.417 1.575 1.575 44.0 36.0 40.0 40.0 50 CLEAR
Buy 1 $124.325/50 Per BAG
Buy 5 $115.625/50 Per BAG
In Stock
1.772t X 1.457b X 1.000"L Sil"
STS 1772
1.772 1.457 1.615 1.000 45.0 37.0 41.0 25.4 50 CLEAR
Buy 1 $82.436/50 Per BAG
Buy 5 $76.678/50 Per BAG
In Stock
1.810t X 1.496b X 1.000"L Sil"
STS 1810
1.810 1.496 1.653 1.000 46.0 38.0 42.0 25.4 50 CLEAR
Buy 1 $99.960/50 Per BAG
Buy 5 $92.963/50 Per BAG
In Stock
1.968t X 1.653b X 1.000"L Sil"
STS 1968
1.968 1.653 1.811 1.000 50.0 42.0 46.0 25.4 50 CLEAR
Buy 1 $97.926/50 Per BAG
Buy 5 $91.074/50 Per BAG
In Stock
2.086t X 1.770b X 1.000"L Sil"
STS 2086
2.086 1.770 1.928 1.000 53.0 45.0 49.0 25.4 25 CLEAR
Buy 1 $58.556/25 Per BAG
Buy 9 $54.448/25 Per BAG
In Stock
2.205t X 1.890b X 1.000"L Si"
STS 2205
2.205 1.890 2.048 1.000 56.0 48.0 52.0 25.4 25 CLEAR
List Price $62.622/25 Per BAG
Buy 1 $62.620/25 Per BAG
Buy 5 $58.236/25 Per BAG
In Stock
2.362t X 1.969b X 1.772"L Sil"
STS 2362X1772
2.362 1.969 2.166 1.772 56.0 50.0 55.0 45.0 25 CLEAR
Buy 1 $120.310/25 Per BAG
Buy 5 $111.889/25 Per BAG
In Stock
2.480t X 1.968b X 1.000"L Sil"
STS 2480
2.480 1.968 2.224 1.000 63.0 50.0 56.5 25.4 25 CLEAR
Buy 1 $78.205/25 Per BAG
Buy 5 $72.735/25 Per BAG
In Stock
2.520t X 2.125b X 1.000"L Sil"
STS 2520
2.520 2.125 2.323 1.000 64.0 54.0 59.0 25.4 25 CLEAR
Buy 1 $82.219/25 Per BAG
Buy 5 $76.461/25 Per BAG
In Stock
2.677t X 2.283b X 1.000"L Sil"
STS 2677
2.677 2.283 2.480 1.000 68.0 58.0 63.0 25.4 25 CLEAR
Buy 1 $90.238/25 Per BAG
Buy 5 $83.922/25 Per BAG
In Stock
2.953t X 2.440b X 1.377"L Sil"
STS 2953
2.953 2.440 2.697 1.377 75.0 62.0 68.5 35.0 25 CLEAR
Buy 1 $128.170/25 Per BAG
Buy 5 $119.196/25 Per BAG
In Stock
3.543t X 2.953b X 1.535"L Sil"
STS 3543
3.543 2.953 3.248 1.535 90.0 75.0 82.5 39.0 10 CLEAR
Buy 1 $74.397/10 Per BAG
Buy 5 $69.196/10 Per BAG
In Stock
4.055t X 3.267b X 1.535"L Sil"
STS 4055X1535
4.055 3.267 3.661 1.535 103.0 83.0 93.0 39.0 10 CLEAR
Buy 1 $93.210/10 Per BAG
Buy 5 $86.688/10 Per BAG
In Stock
5.000t X 3.543b X 1.968"L Sil"
STS 5000
5.000 3.543 4.272 1.968 127.0 90.1 108.5 50.0 5 CLEAR
Buy 1 $100.259/5 Per BAG
Buy 5 $93.241/5 Per BAG
In Stock

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