---
product_id: 1775561
title: "3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos"
brand: "3m"
price: "R$472"
currency: BRL
in_stock: true
reviews_count: 8
category: "3 M"
url: https://www.desertcart.com.br/products/1775561-3m-half-facepiece-reusable-respirator-assembly-kit-6291-size-medium
store_origin: BR
region: Brazil
---

# Adjustable bayonet connection Lightweight at 0.3 lbs NIOSH P100 certified filtration 3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos

**Brand:** 3m
**Price:** R$472
**Availability:** ✅ In Stock

## Summary

> 🛠️ Breathe Boldly, Work Confidently — Your Ultimate Industrial Shield

## Quick Answers

- **What is this?** 3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos by 3m
- **How much does it cost?** R$472 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/1775561-3m-half-facepiece-reusable-respirator-assembly-kit-6291-size-medium)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular & Reusable:** Easily replaceable 2091 particulate filters and disassemblable design extend product life and reduce waste.
- • **Featherlight Comfort:** Ultra-light 0.3 lb thermoplastic elastomer facepiece with soft, adjustable straps for all-day wear without fatigue.
- • **Versatile Industrial Use:** Trusted for hazardous environments—lead, asbestos, cadmium exposure—up to 10x PEL, ideal for professionals who demand safety.
- • **Certified P100 Protection:** NIOSH-approved to block 99.97% of airborne particles, including oil and non-oil based contaminants.
- • **Optimized Fit & Visibility:** Swept-back cartridge design enhances balance and field of vision, perfect for precision tasks like welding and soldering.

## Overview

The 3M Half Facepiece Reusable Respirator Assembly Kit 6291 (Medium) combines NIOSH P100 certified filtration with a lightweight, comfortable half-face design. Featuring easy-to-adjust straps and a secure bayonet connection, it offers superior protection against oil and non-oil based particles in demanding industrial environments such as welding, soldering, and asbestos handling. Its reusable, modular construction with replaceable 2091 filters ensures long-term cost efficiency and reliable respiratory defense for professionals.

## Description

The 3M 6391 Half Facepiece Respirator Assembly includes the 3M Half Facepiece Respirator 6300 and 3M P100 Particulate Filters 2091. Helps provide respiratory protection in environments containing certain oil and non-oil based particles. This assembly includes a 3M 6000 Series Half Facepiece Reusable Respirator and two 3M 2091 P100 Particulate Filters. This assembly is NIOSH approved for environments containing certain oil and non-oil based particles. When properly fitted, this respirator helps provide protection in a variety of applications including welding, brazing, torch cutting, metal pouring, soldering, and exposure to lead asbestos, cadmium, arsenic, and MDA at concentrations up to 10 times the Permissible Exposure Limit (PEL). This respirator is remarkably comfortable, soft, and lightweight, and features easy-to-adjust head straps. The swept-back design of the cartridges helps improve balance and visibility. Easy-to-adjust head straps allow for a customized fit to the user. When used to capacity, the included cartridges can be removed and replaced with new P100 Filter/Cartridges or other NIOSH approved 3M 2000 or 2200 Series Filters or 6000 Series Cartridges. The respirator can also be disassembled, cleaned, and reused, extending the life and cost effectiveness of the product. NIOSH, a Federal government regulatory agency, has tested and approved the 6000 Series with 3M cartridges, filters or supplied air systems to help reduce breathing certain airborne contaminants. The 6000 Series is NIOSH approved for negative air purifying and positive pressure dual airline applications. The respirator comes with a P100 filter, which is replaceable. This half facepiece respirator may be used with any of these replacements: 3M Cartridge 6000 Series; 3M Filters 2000, 2200, 7000 or 5000 Series; or 3M Dual Airline Systems against a variety of gases, vapors, and particulate hazards according to NIOSH approvals. Breathing hazardous particles, gases and vapors can be harmful to your health. The 3M half Facepiece Reusable Respirator 6000 Series helps reduce exposure to many contaminants.

Review: Comfortable fit, excellent air exchange - I purchased three of these masks for my family during this summer's wildfire season, which unfortunately continues to burn only 8 miles away from my home. These 3M Half Face-piece Reusable Respirator Assemblies make the smoke bearable. The fit is snug, but not tight and can be adjusted to fit different face sizes. The feel of the mask becomes more comfortable over time than surgical-type masks, which tend to lack suitable air exchange which holds in vapor (ie: sweat). The filters which are pictured on the side of the respirator (pink in the picture, but we received blue ones with our masks), are easy to attach to the mask. You will need to purchase new filters as these get soiled, but the price is reasonable. Notches on the respirator correspond with those on the filters and it's a matter of lining them up and twisting them on. The connection is very secure and the filters do a great job. These respirators are superior to the basic paper face masks, and obviously work well enough to be used in multiple situations, for multiple uses. I would recommend these masks to anyone who needs a step above the basic filtration that a 3M 1860S Particulate Respirator and Surgical Mask, Small, Box of 20 provides. People with asthma, COPD, the elderly, children and those with autoimmune diseases would benefit from using this mask in smokey conditions. Under normal circumstances, those who are into crafting and woodworking, using sanders, paints, and varnishes, would also find this respirator assembly a helpful safety basic. These masks do come in sizes (S,M,LG). I purchased 3 of the medium size, and it seems to fit everyone (all average sized 5'4-5'10, average weight), just fine. I highly recommend this quality 3M product.
Review: IT REALLY WORKS! - I’m a person who wears glasses and it’s been difficult to find a mask that fits well and does not fog up my lenses. Even products that boast being anti-fog don’t work … for me anyway. But this dust mask is awesome! I enjoy working with wood, especially wood sculpture, and the sanding/finishing process requires intricate sanding with my face close to the piece. In the past I’ve often left my studio coughing and sneezing after a day’s work. NO MORE! This mask fits well and is easy to put on and take off. The filters are a breeze to install and highly effective capturing any kind of particulate that might be floating around my studio. The replacement filters are reasonably priced although I haven’t needed to change them over the past month or so. I learned about this product while watching a YouTube channel/program that suggested it. I am obviously very pleased with this product and recommend it highly.

## Features

- NIOSH APPROVED: For environments containing certain oil and non-oil based particles
- ASSEMBLY INCLUDES: Half facepiece respirator and particulate filter 2091 P100
- HALF FACEPIECE DESIGN: Combines comfort and convenience
- REMARKABLY COMFORTABLE: Soft, lightweight facepiece and easy-to-adjust head straps
- CONNECTION TYPE: Bayonet
- For industrial/occupational use only. Not for consumer sale or use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FTEDMM |
| Best Sellers Rank | #38,089 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Reusable Respirators |
| Brand | 3M |
| Brand Name | 3M |
| Closure Type | Strap |
| Color | Gray |
| Customer Reviews | 4.5 out of 5 stars 3,138 Reviews |
| Filter Class | P100 |
| Fit Type | Regular |
| Global Trade Identification Number | 50051131070023 |
| Included Components | 3M 6000 Series Half Facepiece Reusable Respirator and two 3M 2091 P100 Particulate Filters |
| Item Dimensions D x W x H | 30"D x 8"W x 6"H |
| Item Package Quantity | 1 |
| Item Type Name | Respirator |
| Item Weight | 0.3 Pounds |
| Manufacturer | 3M |
| Material | Thermoplastic Elastomers |
| Material Features | Recyclable |
| Number of Items | 1 |
| Pattern | Respirator Assembly |
| Product Care Instructions | Hand Wash |
| Product Style | Half Facepiece Reusable Respirator |
| Recommended Uses For Product | Welding |
| Reusability | Reusable |
| Size | 1 Count (Pack of 1) |
| Special Features | Adjustable Headband, Lightweight |
| Specification Met | NIOSH |
| Style Number | 6291 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** 3M
- **Color:** Gray
- **Filter Class:** P100
- **Number of Items:** 1
- **Size:** 1 Count (Pack of 1)

## Images

![3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 1](https://m.media-amazon.com/images/I/71BsLBxaikL.jpg)
![3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 2](https://m.media-amazon.com/images/I/71h+Mwu66zL.jpg)
![3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 3](https://m.media-amazon.com/images/I/71ueqEmIklL.jpg)
![3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 4](https://m.media-amazon.com/images/I/71tuJdgsyFL.jpg)
![3M Half Facepiece Reusable Respirator Assembly Kit 6291, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos - Image 5](https://m.media-amazon.com/images/I/71BvuMr5ZFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Comfortable fit, excellent air exchange
*by A***K on August 18, 2013*

I purchased three of these masks for my family during this summer's wildfire season, which unfortunately continues to burn only 8 miles away from my home. These 3M Half Face-piece Reusable Respirator Assemblies make the smoke bearable. The fit is snug, but not tight and can be adjusted to fit different face sizes. The feel of the mask becomes more comfortable over time than surgical-type masks, which tend to lack suitable air exchange which holds in vapor (ie: sweat). The filters which are pictured on the side of the respirator (pink in the picture, but we received blue ones with our masks), are easy to attach to the mask. You will need to purchase new filters as these get soiled, but the price is reasonable. Notches on the respirator correspond with those on the filters and it's a matter of lining them up and twisting them on. The connection is very secure and the filters do a great job. These respirators are superior to the basic paper face masks, and obviously work well enough to be used in multiple situations, for multiple uses. I would recommend these masks to anyone who needs a step above the basic filtration that a 3M 1860S Particulate Respirator and Surgical Mask, Small, Box of 20 provides. People with asthma, COPD, the elderly, children and those with autoimmune diseases would benefit from using this mask in smokey conditions. Under normal circumstances, those who are into crafting and woodworking, using sanders, paints, and varnishes, would also find this respirator assembly a helpful safety basic. These masks do come in sizes (S,M,LG). I purchased 3 of the medium size, and it seems to fit everyone (all average sized 5'4-5'10, average weight), just fine. I highly recommend this quality 3M product.

### ⭐⭐⭐⭐⭐ IT REALLY WORKS!
*by D***M on November 4, 2023*

I’m a person who wears glasses and it’s been difficult to find a mask that fits well and does not fog up my lenses. Even products that boast being anti-fog don’t work … for me anyway. But this dust mask is awesome! I enjoy working with wood, especially wood sculpture, and the sanding/finishing process requires intricate sanding with my face close to the piece. In the past I’ve often left my studio coughing and sneezing after a day’s work. NO MORE! This mask fits well and is easy to put on and take off. The filters are a breeze to install and highly effective capturing any kind of particulate that might be floating around my studio. The replacement filters are reasonably priced although I haven’t needed to change them over the past month or so. I learned about this product while watching a YouTube channel/program that suggested it. I am obviously very pleased with this product and recommend it highly.

### ⭐⭐⭐⭐⭐ A must buy to save your lungs
*by M***R on July 9, 2015*

This saved my wood working career. I have worked with wood for 40 years, never had a problem, never wore a mask. I began turning with the lathe and almost ended up in the emergency room- luckily I had a nebulizer for the kids at home. The exotic woods are very hard on the respiratory system and you must protect yourself. I now own four of these (one for each of my kids and a traveling one). The mask is reasonably comfortable, it fits over your head with two loops of the plastic strap. I have a small hat size and it fits me fine. It is light weight. It can get a little warm after several hours. I find that I don't like wearing it more then 4 hours straight. Once adjusted I haven't had to adjust it again. My glasses fit fine under the straps and if I'm using safety goggles they strap over the mask and I haven't had a problem. I've been using it over a year and have not had to change the filters. The outside gets dirty and I wipe them off with a damp cloth- you can't get the filters wet. The filters twist on easily and twist off when I wash the whole mask in water. I now use an air filtration system in the shop but used this by itself and never had another problem breathing.

## Frequently Bought Together

- 3M Half Facepiece Reusable Respirator Assembly Kit 6391, Size Medium, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos
- 3M 2091 P100 Particulate Filter, 3 Pairs
- 3M Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-14*