Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Deals
  • Contact Us
Added to Cart
Skip to Main Content
FREE SHIPPING on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
User Headset Icon User Headset Icon Customer Service
Cart Icon
0
Cart Icon
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Power Transmission
  4. /
  5. Hydraulic Cylinders & Equipment
  6. /
  7. Parts & Accessories
  8. /
  9. Sight Plugs

Sight Plugs (287 items)

Ldi Industries Gage, Sight Plug, Lo PSI LSP151-04-01
Ldi Industries

Gage, Sight Plug, Lo PSI

Zoro # G3172391
Mfr # LSP151-04-01
product price:  $11.69
/ea
Ldi Industries Sight Plug Gage, NPT 1/2-14 Inch LSP51-04
Ldi Industries

Sight Plug Gage, NPT 1/2-14 Inch

Zoro # G1477515
Mfr # LSP51-04
product price:  $11.49
/ea
Ldi Industries Gage, Sight Plug, Lo PSI LSP151-06-01
Ldi Industries

Gage, Sight Plug, Lo PSI

Zoro # G1514021
Mfr # LSP151-06-01
product price:  $28.49
/ea
Ldi Industries Sight Plug Gage, NPT 1 1/4-11 1/2 In LSP51-07
Ldi Industries

Sight Plug Gage, NPT 1 1/4-11 1/2 In

Zoro # G0839142
Mfr # LSP51-07
product price:  $27.99
/ea
Ldi Industries Sight Plug Gage, NPT 3/4-14 Inch LSP51-05
Ldi Industries

Sight Plug Gage, NPT 3/4-14 Inch

Zoro # G3290865
Mfr # LSP51-05
product price:  $18.79
/ea
Ldi Industries Gage, Sight Plug, Lo PSI LSP151-05-01
Ldi Industries

Gage, Sight Plug, Lo PSI

Zoro # G0746952
Mfr # LSP151-05-01
product price:  $20.59
/ea
Ldi Industries Sight Plug Gage, NPT 1-11 1/2 Inch LSP51-06
Ldi Industries

Sight Plug Gage, NPT 1-11 1/2 Inch

Zoro # G0570674
Mfr # LSP51-06
product price:  $23.99
/ea
Ldi Industries Sight Plug Gage, NPT 2-11 1/2 Inches LSP51-09
Ldi Industries

Sight Plug Gage, NPT 2-11 1/2 Inches

Zoro # G1723023
Mfr # LSP51-09
product price:  $55.29
/ea
Ldi Industries Gage, Sight Plug, Lo PSI, Body: Solid Brass LSP151-08-01
Ldi Industries

Gage, Sight Plug, Lo PSI, Body: Solid Brass

Zoro # G2190492
Mfr # LSP151-08-01
product price:  $50.55
/ea
Ldi Industries Gage, Sight Plug, Lo PSI, NPT: 3/8-18 LSP151-03-01
Ldi Industries

Gage, Sight Plug, Lo PSI, NPT: 3/8-18

Zoro # G2009743
Mfr # LSP151-03-01
product price:  $12.69
/ea
Elesa Oil level indicators, HCX.127-M12 HCX.
Elesa

Oil level indicators, HCX.127-M12

Zoro # G2270857
Mfr # HCX.
product price:  $35.15
/ea
Elesa Oil level sight glass, HE.30 HE.
Elesa

Oil level sight glass, HE.30

Zoro # G2278566
Mfr # HE.
product price:  $6.15
/ea
Sold in mult. of 2 for $12.30
Elesa Oil level sight glass, HFTX.20-3/4 HFTX.
Elesa

Oil level sight glass, HFTX.20-3/4

Zoro # G2307342
Mfr # HFTX.
product price:  $3.95
/ea
Sold in mult. of 3 for $11.85
Elesa Oil level sight glass, HRT.25-38 HRT.
Elesa

Oil level sight glass, HRT.25-38

Zoro # G2226440
Mfr # HRT.
product price:  $10.19
/ea
Elesa Oil level sight glass, HE.26 HE.
Elesa

Oil level sight glass, HE.26

Zoro # G2276746
Mfr # HE.
product price:  $5.95
/ea
Sold in mult. of 2 for $11.90
Ldi Industries Gage, Sight Plug, Lo PSI LSP151-09-01
Ldi Industries

Gage, Sight Plug, Lo PSI

Zoro # G1790311
Mfr # LSP151-09-01
product price:  $101.99
/ea
Elesa Oil level indicators, HCX.127-SST-M12 HCX-SST
Elesa

Oil level indicators, HCX.127-SST-M12

Zoro # G2272537
Mfr # HCX-SST
product price:  $65.55
/ea
Elesa Oil level sight glass, HE.20 HE.
Elesa

Oil level sight glass, HE.20

Zoro # G2276658
Mfr # HE.
product price:  $5.75
/ea
Sold in mult. of 2 for $11.50
Kipp Oil Level Sight Glass Press-In With Reflector, D1=38, D=42, Thermoplastic K0446.4238
Kipp

Oil Level Sight Glass Press-In With Reflector, D1=38, D=42, Thermoplastic

Zoro # G302083791
Mfr # K0446.4238
product price:  $4.89
/ea
Sold in mult. of 2 for $9.78
Ldi Industries Gage, Sight Plug, Lo PSI LSP151-07-01
Ldi Industries

Gage, Sight Plug, Lo PSI

Zoro # G0837505
Mfr # LSP151-07-01
product price:  $50.19
/ea
Elesa Oil level indicators, HCX.76-M10 HCX.
Elesa

Oil level indicators, HCX.76-M10

Zoro # G2267418
Mfr # HCX.
product price:  $26.55
/ea
Lubesite Oil Level Sight Plug, 1-1/4" NPT LSPB 125
Lubesite

Oil Level Sight Plug, 1-1/4" NPT

Zoro # G1530982
Mfr # LSPB 125
product price:  $44.79
/ea
Sold in mult. of 2 for $89.58
Kipp Oil Level Sight Glass With Reflector, D1=G1/4, D=20, Aluminum K0448.20014
Kipp

Oil Level Sight Glass With Reflector, D1=G1/4, D=20, Aluminum

Zoro # G502204071
Mfr # K0448.20014
product price:  $3.25
/ea
Sold in mult. of 3 for $9.75
Elesa Oil level sight glass, HCFE.20/C-3/4 HCFE-C
Elesa

Oil level sight glass, HCFE.20/C-3/4

Zoro # G2231060
Mfr # HCFE-C
product price:  $6.59
/ea
Sold in mult. of 2 for $13.18
Kipp Oil Level Sight Glass Press-In With Reflector, D1=26, D=30, Thermoplastic K0446.3026
Kipp

Oil Level Sight Glass Press-In With Reflector, D1=26, D=30, Thermoplastic

Zoro # G302083609
Mfr # K0446.3026
product price:  $3.49
/ea
Sold in mult. of 3 for $10.47
Kipp Oil Level Sight Glass Press-In With Reflector, D1=32, D=36, Thermoplastic K0446.3632
Kipp

Oil Level Sight Glass Press-In With Reflector, D1=32, D=36, Thermoplastic

Zoro # G502083638
Mfr # K0446.3632
product price:  $3.65
/ea
Sold in mult. of 3 for $10.95
Lubesite Oil Level Sight Plug, 1" NPT LSPB 100
Lubesite

Oil Level Sight Plug, 1" NPT

Zoro # G1530912
Mfr # LSPB 100
product price:  $35.15
/ea
Sold in mult. of 3 for $105.45
Kipp Oil Level Sight Glass Domed Without Reflector, D1=G3/4, D=35, Thermoplastic K0447.35034
Kipp

Oil Level Sight Glass Domed Without Reflector, D1=G3/4, D=35, Thermoplastic

Zoro # G302204141
Mfr # K0447.35034
product price:  $2.69
/ea
Sold in mult. of 4 for $10.76
Elesa Oil level indicators, HCX.127-P-M12 HCX-P
Elesa

Oil level indicators, HCX.127-P-M12

Zoro # G2275580
Mfr # HCX-P
product price:  $43.45
/ea
Kipp Oil Level Sight Glass With Reflector, D1=G3/8, D=24, 1, Aluminum K0448.24038
Kipp

Oil Level Sight Glass With Reflector, D1=G3/8, D=24, 1, Aluminum

Zoro # G802204054
Mfr # K0448.24038
product price:  $4.15
/ea
Sold in mult. of 2 for $8.30
Elesa Oil electrical level indicators, HCV.254-E-ST-NC-M12 HCV-E-ST
Elesa

Oil electrical level indicators, HCV.254-E-ST-NC-M12

Zoro # G2246278
Mfr # HCV-E-ST
product price:  $165.99
/ea
Elesa Oil electrical level indicators, HCV.127-E-AX-NO-M12 HCV-E-AX
Elesa

Oil electrical level indicators, HCV.127-E-AX-NO-M12

Zoro # G2057847
Mfr # HCV-E-AX
product price:  $119.99
/ea
Ldi Industries Sight Plug Gage, NPT 1 1/2-11 1/2 In LSP51-08
Ldi Industries

Sight Plug Gage, NPT 1 1/2-11 1/2 In

Zoro # G0900706
Mfr # LSP51-08
product price:  $41.39
/ea
Kipp Oil Level Sight Glass With Reflector, D1=M18X1, 5, D=24, 5, Aluminum K0448.241815
Kipp

Oil Level Sight Glass With Reflector, D1=M18X1, 5, D=24, 5, Aluminum

Zoro # G302203977
Mfr # K0448.241815
product price:  $5.99
/ea
Sold in mult. of 2 for $11.98
Kipp Oil Level Sight Glass With Reflector, D1=M22X1, 5, D=29, 5, Aluminum K0448.292215
Kipp

Oil Level Sight Glass With Reflector, D1=M22X1, 5, D=29, 5, Aluminum

Zoro # G502204033
Mfr # K0448.292215
product price:  $6.89
/ea
Sold in mult. of 2 for $13.78
Kipp Oil Level Sight Glass D1=M14X1, 5, D=20, Form:A Without Reflector, Thermoplastic K0445.1201415
Kipp

Oil Level Sight Glass D1=M14X1, 5, D=20, Form:A Without Reflector, Thermoplastic

Zoro # G402083387
Mfr # K0445.1201415
product price:  $1.39
/ea
Sold in mult. of 6 for $8.34
Sight Plugs (287 items)
  • 1
    of 8 pages
  • Next
  • Last
How was your search?

About Sight Plugs

Sight Plugs are a type of device used to monitor oil levels, check the pressure or temperature of an enclosed system, and visually inspect a process or operation. They are designed to provide a safe, reliable way to view into systems without compromising safety or reliability.

Types of Sight Plugs

Sight Plugs come in many different shapes and sizes. Hydraulic sight plugs allow for quick identification of fluid levels in hydraulic systems. Oil level sight glass plug is specifically designed for monitoring oil levels. Sight gages are typically used for visual inspections and can be used with a variety of fluids and gases. Sight glass plugs are available in both threaded and flanged connections, making them suitable for most applications.

How Sight Plugs are Made

Sight Plugs are typically made from steel, stainless steel, aluminum alloy, brass alloy, or plastic material. Different types may also feature materials such as borosilicate glass or acrylic depending on the application they’re being used for. These materials make the sight plug durable enough to withstand high temperatures and pressures.

Industries that use Sight Plugs

Sight Plugs have many applications across industries such as automotive, manufacturing, aerospace engineering, chemical processing plants, food processing plants and more. Professionals in these industries rely on sight plugs to accurately monitor their operations while ensuring safety regulations are met.

Find the Sight Plugs You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of sight plugs, along with other tools or equipment to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.

Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

Hydraulic Cylinder PartsMaintenance SetsHydraulic Filtration PartsHydraulic Quick CouplersBreathers
Hydraulic Hose Adapters & PlugsHydraulic Control ValvesHydraulic Check ValvesHydraulic Return Line FiltersHydraulic Hand Pumps
gage glassliquid level sight glassoil level sightsight glassessight plug gage
npt thread gaugebreather plugsight plug gaugepress fit sight glassoil level indicators

Sign up and save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every part plays a part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Deals
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research

Zoro, Inc

Connect

Customer service from real people

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc