---
product_id: 27018280
title: "G-MAN O-Ring Lubricant PST-841, 2 oz. Tube"
brand: "polysi g-man lubricants"
price: "€ 11.78"
currency: EUR
in_stock: false
reviews_count: 4
url: https://www.desertcart.ie/products/27018280-g-man-o-ring-lubricant-pst-841-2-oz-tube
store_origin: IE
region: Ireland
---

# Water washout resistant adhesion Non-toxic & rubber/plastic safe Extreme temp range -65°F to 400°F G-MAN O-Ring Lubricant PST-841, 2 oz. Tube

**Brand:** polysi g-man lubricants
**Price:** € 11.78
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Keep your seals tight and your workflow smoother than ever!

## Quick Answers

- **What is this?** G-MAN O-Ring Lubricant PST-841, 2 oz. Tube by polysi g-man lubricants
- **How much does it cost?** € 11.78 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/27018280-g-man-o-ring-lubricant-pst-841-2-oz-tube)

## Best For

- polysi g-man lubricants enthusiasts

## Why This Product

- Trusted polysi g-man lubricants brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & convenient:** 2 oz. tube size perfect for on-the-go maintenance and precision application.
- • **Universal compatibility:** Safe for use on nearly all rubber and plastic materials (except silicone rubber).
- • **Non-toxic & skin-friendly:** Formulated to be non-irritating and safe for professional use without harsh chemicals.
- • **Long-lasting seal protection:** Adheres firmly to O-rings to prevent washout and cracking, extending seal life.
- • **Extreme temperature resilience:** Performs flawlessly from freezing -65°F to scorching 400°F environments.

## Overview

PolySi G-MAN PST-841 is a premium 100% silicone O-ring lubricant designed to provide durable, water-resistant lubrication across a wide temperature range (-65°F to 400°F). Its non-toxic, non-irritating formula adheres strongly to most rubber and plastic surfaces, preventing drying and cracking for long-term seal integrity. Packaged in a handy 2 oz. tube, it’s the go-to choice for professionals demanding reliable, maintenance-saving performance.

## Description

PolySi PST-841 Silicone O-ring Lubricant is made with a 100% silicone. This thick oil was designed to adhere to O-rings and prevent the material from washing away, enabling the lubricant to stay on the rubber surface and provide long term lubrication. PST-841 is non-toxic, non-irritating, moisture resistant, and has a wide temperature range (-65F- 400F). PolySi Technologies’ PST-841 has been proven compatible with most all rubbers and plastics. It is not recommended for silicone rubber applications, as it can result in increased swelling and softening of the silicone rubber.

Review: PST-841 Review - PST-841 far surpassed my expectations. I had 2 hose o-rings that were dry, brittle and cracked and that caused my hose bib to leak. I used PST-841 on the replacement o-rings and have gone two years without any leaking issues. It's also the perfect size in a 2 oz. tube. It may be more expensive than some but the quality is worth it. Using the right lube saves a lot of time. PolySi Technologies PST-841 O-Ring Lubricant, 2 oz. Tube
Review: very sticky - Not exactly what I was expecting for a lubricant. I used it on an air valve o-ring that gets lots of use, so it remains to be seen if it causes the valve to hang up (like it does when it gets dry) or it the stickiness helps the lube stay on the o-ring, so it lasts longer than the silicon gel I have been using. The stickiness will be helpful to hold O-rings in place for some types of assemblies where the o-ring is only for making a seal and not on a moving valve. Took off 1 star because the description is not detailed enough to know if it can be used on moving parts.

## Features

- Excellent o-ring lubricant
- PST-841 o-ring lubricant is designed to adhere to o-rings and prevent water washout
- Non-toxic, non-irritating
- Performs well in extreme conditions (-65F-400F)
- Compatible with most all rubbers and plastics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | PolySi G-MAN Lubricants |
| Item Weight | 2 Ounces |
| Liquid Volume | 2 Fluid Ounces |
| Material | Silicone |
| Package Information | Tube |
| Recommended Uses For Product | Washing |

## Product Details

- **Brand:** PolySi G-MAN Lubricants
- **Item Weight:** 2 Ounces
- **Liquid Volume:** 2 Fluid Ounces
- **Material:** Silicone
- **Package Information:** Tube

## Images

![G-MAN O-Ring Lubricant PST-841, 2 oz. Tube - Image 1](https://m.media-amazon.com/images/I/31kj+mdGcBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ PST-841 Review
*by W***E on September 14, 2011*

PST-841 far surpassed my expectations. I had 2 hose o-rings that were dry, brittle and cracked and that caused my hose bib to leak. I used PST-841 on the replacement o-rings and have gone two years without any leaking issues. It's also the perfect size in a 2 oz. tube. It may be more expensive than some but the quality is worth it. Using the right lube saves a lot of time. PolySi Technologies PST-841 O-Ring Lubricant, 2 oz. Tube

### ⭐⭐⭐⭐ very sticky
*by S***R on November 30, 2012*

Not exactly what I was expecting for a lubricant. I used it on an air valve o-ring that gets lots of use, so it remains to be seen if it causes the valve to hang up (like it does when it gets dry) or it the stickiness helps the lube stay on the o-ring, so it lasts longer than the silicon gel I have been using. The stickiness will be helpful to hold O-rings in place for some types of assemblies where the o-ring is only for making a seal and not on a moving valve. Took off 1 star because the description is not detailed enough to know if it can be used on moving parts.

### ⭐⭐⭐⭐⭐ Great (slick) Product
*by L***N on February 24, 2017*

I think it tastes ok :-) Great product and goes a LONG way. Cost VS. Expense.....? Nothing beats it, so, its WORTH the expense... Very thick and almost sticky, but quite slippery. Great o-ring lube!

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---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-26*