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Sight Plug, Electroless Nickel Plated Steel Body, 3/4 NPT Thread

Description & Features

This sight plug is constructed from electroless nickel plated steel providing excellent corrosion resistance. It is engineered for industrial environments where high pressure and temperature are critical.

Designed to handle a maximum working pressure of 1500 psi the plug ensures stability and reliability. Suitable for applications requiring high durability the temperature rating of up to 500 degrees allows it to perform efficiently under harsh conditions.

The 3/4 NPT thread offers compatibility with standard fittings enhancing its versatility.

With a robust build this sight plug by Lube Devices is essential for effective monitoring of fluid levels in demanding settings ensuring long-term performance.

MPN: LSP51-05

Supplier Part Number: LSP51-05

Specifications

C 0.75	D 1.06	E 0.94	Brand LDI Industries	Brand LDI	Pack Size 1.00	UOM EA	Includes None	Materials Electroless Nickel Plated Steel Body	Maximum Working Pressure 1500	Mfg. Name Lube Devices	Supplier Part Number LSP51-05	Temp. Rating 500	Thread 1 3/4 NPT	Alternate Part Numbers Alternate Part Number C1DD30	Product Weight 0.20 lbs

Similar Products

Model Number	Thread 1	Materials	Includes	Temp. Rating	Maximum Working Pressure	C	D	E	Price	Action
LSP151-05-02 Sight Plug	3/4 NPT	Brass Body, Buna-N Seals, Stainless & Aluminum Reflector	Cork Ball, Reflector		10	0.75	1.125	1

Product Questions & Answers (3)

Question by: Melvin A on Jul 12, 2025, 10:37 AM

Will this sight plug hold up to hydraulic fluid, or will it corrode?

Answer by: Customer Support on Jul 13, 2025, 6:45 PM

This sight plug's electroless nickel plated steel body is designed to provide excellent corrosion resistance, making it suitable for use with hydraulic fluid.

Question by: Frank P on Dec 26, 2025, 8:31 AM

What kind of temps and pressures can this sight plug actually handle out in the field?

Answer by: Customer Support on Dec 28, 2025, 7:52 AM

Rated up to 500 degrees Fahrenheit and 1500 psi working pressure, so it holds up well in pretty demanding industrial setups. The electroless nickel plated steel body helps it resist corrosion on top of that, which matters a lot when you're running hot fluids through tight equipment day after day.

Question by: Rex F on Aug 11, 2025, 4:14 PM

got a tank port that’s 3/4 NPT. is this the right thread for that, or am i gonna be fighting it?

Answer by: Customer Support on Aug 13, 2025, 6:28 AM

Thread fit comes down to the connection type, and this plug is made with a 3/4 NPT thread, so it matches standard 3/4 NPT ports.