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Plastic Caps & Plugs

Keep grit out of your hydraulic ports during teardown, transport and rebuild. Our stock of plastic caps and plugs seal out dust and moisture and protect threads, flange faces and bolt holes. Choose threaded flat face O-ring styles for a positive fit or push-on split flange and caps for fast on-off during service work.

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60 results

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Plastic Caps
Plastic Caps
Plastic caps made from tough, flexible polyethylene for push-on, push-off protection of tubes, pipes and fittings. They seal out dust and moisture and resist solvents and caustic or acidic baths. Useful for equipment maintenance and repair tasks.
Item # Industry Number Inside Diameter Outside Diameter Package Qty
#0 Plastic Cap - 25 Pack
0
7/64"
15/64"
25
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#1 Plastic Cap - 25 Pack
1
11/64"
19/64"
25
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#2 Plastic Cap - 25 Pack
2
15/64"
23/64"
25
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#3 Plastic Cap - 25 Pack
3
19/64"
27/64"
25
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#4 Plastic Cap - 25 Pack
4
23/64"
31/64"
25
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#5 Plastic Cap - 25 Pack
5
13/32"
35/64"
25
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#6 Plastic Cap - 25 Pack
6
15/32"
39/64"
25
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#7 Plastic Cap - 25 Pack
7
33/64"
43/64"
25
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#8 Plastic Cap - 25 Pack
8
37/64"
23/32"
25
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#9 Plastic Cap - 25 Pack
9
5/8"
25/32"
25
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#10 Plastic Cap - 25 Pack
10
11/16"
27/32"
25
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#11 Plastic Cap - 25 Pack
11
3/4"
29/32"
25
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#12 Plastic Cap - 25 Pack
12
51/64"
63/64"
25
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#13 Plastic Cap - 25 Pack
13
29/32"
1-3/32"
25
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#14 Plastic Cap - 25 Pack
14
1-1/32"
1-7/32"
25
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#15 Plastic Cap - 25 Pack
15
1-5/32"
1-23/64"
25
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#16 Plastic Cap - 25 Pack
16
1-1/4"
1-15/32"
25
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#17 Plastic Cap - 25 Pack
17
1-25/64"
1-19/32"
25
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#18 Plastic Cap - 10 Pack
18
1-1/2"
1-11/16"
10
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#19 Plastic Cap - 10 Pack
19
1-11/16"
1-7/8"
10
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#20 Plastic Cap - 10 Pack
20
1-23/32"
1-31/32"
10
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#210 Plastic Cap - 10 Pack
210
1-25/32"
2"
10
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#220 Plastic Cap - 10 Pack
220
1-59/64"
2-1/8"
10
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#221 Plastic Cap - 10 Pack
221
2"
2-1/4"
10
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#230 Plastic Cap - 10 Pack
230
2-5/64"
2-5/16"
10
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#240 Plastic Cap - 10 Pack
240
1-15/64"
1-15/32"
10
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#11X Plastic Cap - 25 Pack
11X
3/4"
57/64"
25
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#12X Plastic Cap - 25 Pack
12X
55/64"
1-1/16"
25
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#13X Plastic Cap - 25 Pack
13X
15/16"
1-5/32"
25
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#14X Plastic Cap - 25 Pack
14X
1-7/64"
1-19/64"
25
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#15X Plastic Cap - 25 Pack
15X
1-11/64"
1-3/8"
25
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#17S Plastic Cap - 10 Pack
17S
1-25/64"
1-19/32"
10
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#18X Plastic Cap - 10 Pack
18X
1-9/16"
1-3/4"
10
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#20S Plastic Cap - 10 Pack
20S
1-23/32"
1-13/16"
10
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#24S Plastic Cap - 10 Pack
24S
2-11/64"
2-1/4"
10
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#2X Plastic Cap - 25 Pack
2X
17/64"
25/64"
25
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#3X Plastic Cap - 25 Pack
3X
21/64"
29/64"
25
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#4X Plastic Cap - 25 Pack
4X
25/64"
33/64"
25
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#6X Plastic Cap - 25 Pack
6X
31/64"
41/64"
25
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#8X Plastic Cap - 25 Pack
8X
39/64"
3/4"
25
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#9X Plastic Cap - 25 Pack
9X
43/64"
53/64"
25
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Plastic Split Flange Hydraulic Plugs
Plastic Split Flange Hydraulic Plugs
Plastic split flange hydraulic plugs made from flexible polyethylene for push-on installation. Protects Code 61 split flange ports, flange faces and bolt holes from damage and debris. Chemical resistant construction helps extend service life. Made in the U.S.A.
Item # Industry Number Flange Diameter Material Package Qty
1" Plastic Split Flange Hydraulic Plug - 5 Pack
SHF-1.000
1"
Plastic
5
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1-1/4" Plastic Split Flange Hydraulic Plug - 5 Pack
SHF-1.250
1-1/4"
Plastic
5
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1-1/2" Plastic Split Flange Hydraulic Plug - 5 Pack
SHF-1.500
1-1/2"
Plastic
5
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2" Plastic Split Flange Hydraulic Plug - 5 Pack
SHF-2.000
2"
Plastic
5
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3/4" Plastic Split Flange Hydraulic Plug - 5 Pack
SHF-750
3/4"
Plastic
5
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Flat Face O-Ring Plugs
Flat Face O-Ring Plugs
Flat face o-ring plugs made from molded polyethylene plastic for chemical resistance. Threaded design fits female flat face o-ring fittings and chamfered flange allows easy hand removal. Helps seal out dust and moisture during equipment service and repair tasks. Made in the U.S.A.
Item # Industry Number Tube OD Thread Size Material Package Qty
1/4" Flat Face O-Ring Plug - 20 Pack
PDE-6
1/4"
9/16"-18
Plastic
20
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5/8" Flat Face O-Ring Plug - 20 Pack
PDF-100
5/8"
1"-14
Plastic
20
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3/4" Flat Face O-Ring Plug - 20 Pack
PDF-120
3/4"
1-3/16"-12
Plastic
20
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1" Flat Face O-Ring Plug - 5 Pack
PDF-160
1"
1-7/16"-12
Plastic
5
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1-1/4" Flat Face O-Ring Plug - 5 Pack
PDF-180
1-1/4"
1-11/16"-12
Plastic
5
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3/8" Flat Face O-Ring Plug - 20 Pack
PDF-60
3/8"
11/16"-16
Plastic
20
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1/2" Flat Face O-Ring Plug - 20 Pack
PDF-80
1/2"
13/16"-16
Plastic
20
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Flat Face O-Ring Caps
Flat Face O-Ring Caps
Flat face o-ring caps molded from polyethylene plastic for protection of flat face o-ring fittings. Chamfered flange allows easy hand removal and caps fit snugly over male fittings. Chemical-resistant material helps keep out dust and moisture during service. Made in the U.S.A.
Item # Industry Number Tube OD Thread Size Material Package Qty
5/8" Flat Face O-Ring Cap - 20 Pack
FCO-100
5/8"
1"-14
Plastic
20
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3/4" Flat Face O-Ring Cap - 20 Pack
FCO-120
3/4"
1-3/16"-12
Plastic
20
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1" Flat Face O-Ring Cap - 5 Pack
FCO-160
1"
1-7/16"-12
Plastic
5
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1-1/4" Flat Face O-Ring Cap - 5 Pack
FCO-200
1-1/4"
1-11/16"-12
Plastic
5
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1/4" Flat Face O-Ring Cap - 20 Pack
FCO-40
1/4"
9/16"-18
Plastic
20
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3/8" Flat Face O-Ring Cap - 20 Pack
FCO-60
3/8"
11/16"-16
Plastic
20
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1/2" Flat Face O-Ring Cap - 20 Pack
FCO-80
1/2"
13/16"-16
Plastic
20
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41 options | Item #: 90633
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5 options | Item #: 901051
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7 options | Item #: 901000
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7 options | Item #: 901010
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