Description
The North RU8500 Series half mask respirator, part numbers RU85001S (S), RU85001M (M), RU85001L (L), is a reusable half mask with N-Series threaded cartridge connectors; it takes the North N-Series cartridges and filters listed below. Soft, flexible silicone with dual sealing flange; sizes S, M, L. Ships in 1–2 business days; most orders arrive in 3–7 business days. RU8500 Series: every cartridge, filter, part and NIOSH approval on one page.
RU8500 Series specifications
| Item | Manufacturer data |
|---|---|
| Facepiece type | Half mask |
| Face seal material | Soft, flexible silicone with dual sealing flange |
| Sizes | S, M, L |
| Part numbers | RU85001S, RU85001M, RU85001L |
| Cartridge connectors | N-Series threaded cartridge connectors |
| Speech diaphragm | Speech diaphragm (the product sheet calls it one of the only reusable half masks on the market with one) |
| NIOSH approval | NIOSH approved as an air-purifying respirator with mask-mount and backpack-mount N-Series cartridges and filters (NIOSH CEL) |
Source: North RU8500 Half Mask product family sheet; PIP Rich Product Data, October 2026.
PIP catalog data for RU8500
| Item | Manufacturer data |
|---|---|
| Part numbers | RU85001S (S), RU85001M (M), RU85001L (L) |
| Series | RU8500 Series |
| Manufacturer description | Blue Half Mask with Speech Diaphragm and Industrial Exhalation Cover |
| Color | Blue |
| Sizes | S, M, L |
| Respirator style | Half-Mask |
| Case pack | 12 ea |
| Country of origin | Mexico |
| UPC | 797402013447, 797402013454, 797402013461 |
| PIP stock status | Stock |
| TAA compliant | Yes |
Source: PIP specification sheet, RU85001S and PIP Rich Product Data, October 2026.
Cartridges and filters NIOSH-approved with the RU8500 Series
| Part number | Cartridge or filter | Protection (chart) | Label color |
|---|---|---|---|
| 75SCL | Defender Multi-Purpose Cartridge | Organic Vapor, Ammonia, Methylamine, Formaldehyde and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Sulfide, Hydrogen Fluo | Olive |
| N75001L | Organic Vapor Cartridge | Organic Vapor | Black |
| N75002L | Acid Gas and Formaldehyde Cartridge | Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Fluoride, Chlorine Dioxide) and Formaldehyde | White |
| N75003L | Organic Vapor and Acid Gas Cartridge | Organic Vapor and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Fluoride, Hydrogen Sulfide, Chlorine Dioxide) | Yellow |
| N75004L | Ammonia and Methylamine Cartridge | Ammonia and Methylamine | Green |
| N750052L | Mercury Vapor and Chlorine Cartridge with ESLI | Mercury Vapor and Chlorine, with End-of-Service-Life Indicator (ESLI) for Mercury Vapor | Olive |
| 75SCP100L | Defender Multi-Purpose Cartridge with P100 Filter | Organic Vapor, Ammonia, Methylamine, Formaldehyde and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Sulfide, Hydrogen Fluo | Olive and Magenta |
| 7581P100L | Organic Vapor Cartridge with P100 Filter | Organic Vapor, with a P100 particulate filter (99.97% minimum filter efficiency) for all particulates | Black and Magenta |
| 7583P100L | Organic Vapor and Acid Gas Cartridge with P100 Filter | Organic Vapor and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Fluoride, Hydrogen Sulfide, Chlorine Dioxide), with a P100 | Yellow and Magenta |
| 7584P100L | Ammonia and Methylamine Cartridge with P100 Filter | Ammonia and Methylamine, with a P100 particulate filter (99.97% minimum filter efficiency) for all particulates | Green and Magenta |
| 75852P100L | Mercury Vapor and Chlorine Cartridge with ESLI and P100 Filter | Mercury Vapor and Chlorine, with End-of-Service-Life Indicator (ESLI) for Mercury Vapor, with a P100 particulate filter (99.97% minimum filt | Olive and Magenta |
| 7586P100L | Nitrogen Dioxide Cartridge with P100 Filter | Nitrogen Dioxide, with a P100 particulate filter | — |
| 7580P100 | P100 Particulate Filter | P100 particulate filter (99.97% minimum filter efficiency) for all particulates | Magenta |
| 75FFP100 | Low Profile P100 Particulate Filter | Low profile P100 particulate filter (99.97% minimum filter efficiency) for all particulates | Magenta |
| 75FFP100NL | Low Profile P100 Particulate Filter with Odor Relief | Low profile P100 particulate filter (99.97% minimum filter efficiency) for all particulates; with odor relief from nuisance levels of organi | Magenta |
| 7506N95 | N95 Non-Oil Particulate Filter | N95 non-oil particulate filter (95% minimum filter efficiency) for non-oil based aerosol particulates | — |
| 7506R95 | R95 Particulate Filter | R95 particulate filter (95% minimum filter efficiency). The chart notes R class filters are limited to 8 hours of use in environments with o | — |
Source: The manufacturer's NIOSH approval label for each cartridge and filter, which lists the RU8500 Series facepieces as approved components; North Cartridge & Filter Reference Chart.
NIOSH approvals naming the RU8500 Series
The NIOSH Certified Equipment List carries 90 current approvals whose product line names the RU8500 Series: 11 chemical cartridge (TC-23C), 79 air-purifying particulate (TC-84A). The first 12:
| Approval | Product line | For protection against | Facepiece |
|---|---|---|---|
| TC-23C-3082 | RU8500 series halfmask respirator with mask mount cartridge | Organic Vapor | Half Mask |
| TC-23C-3083 | RU8500 series halfmask respirator with back pack mount cartridge | Organic Vapor | Half Mask |
| TC-23C-3084 | RU8500 series halfmask respirator with mask mount cartridge | Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen S | Half Mask |
| TC-23C-3085 | RU8500 series halfmask respirator with back pack mount cartridge | Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen S | Half Mask |
| TC-23C-3086 | RU8500 series halfmask respirator with mask mount cartridge | Chlorine, Chlorine Dioxide, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen Sulfide, Organi | Half Mask |
| TC-23C-3087 | RU8500 series halfmask respirator with back pack mount cartridge | Chlorine, Chlorine Dioxide, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen Sulfide, Organi | Half Mask |
| TC-23C-3088 | RU8500 series halfmask respirator with mask mount cartridge | Ammonia, Methylamine | Half Mask |
| TC-23C-3089 | RU8500 series halfmask respirator with back pack mount cartridge | Ammonia, Methylamine | Half Mask |
| TC-23C-3090 | RU8500 series halfmask respirator with mask mount cartridge | Chlorine, Mercury Vapor | Half Mask |
| TC-23C-3091 | RU8500 series halfmask respirator with mask mount cartridge | Ammonia, Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, H | Half Mask |
| TC-23C-3092 | RU8500 series halfmask respirator with back pack mount cartridge | Ammonia, Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, H | Half Mask |
| TC-84A-7529 | RU8500 series halfmask respirator with mask mount filter | P100 | Half Mask |
Source: NIOSH Certified Equipment List (October 2026), manufacturer PIP Global Holdings (the North brand).
Assigned protection factor
| Respirator type (OSHA Table 1) | APF |
|---|---|
| Air-purifying half mask | 10 |
| Powered air-purifying half mask | 50 |
| Supplied-air respirator, continuous flow, half mask | 50 |
Source: OSHA 29 CFR 1910.134 Table 1 (Assigned Protection Factors). The APF applies only when the respirator is used in a program that meets the standard, including fit testing of tight-fitting facepieces (29 CFR 1910.134(f)) and a cartridge change schedule (29 CFR 1910.134(d)(3)(iii)).
RU8500 Series replacement parts and accessories
| Part number | Part |
|---|---|
| 77BAG | nylon carrying bag |
| B140001 | spare inhalation valves |
Source: North RU8500 Half Mask product family sheet and the North parts lists.
Catalog data
| Item | Manufacturer data |
|---|---|
| Construction | Adjustable Straps |
| Respirator Style | Half-Mask |
| Material Content | Silicone |
| Color | Blue |
Source: Manufacturer published product data as carried in our catalog.
The RU8500 is one of the only reusable half masks on the market with a speech diaphragm. This feature offers improved speech clarity – eliminating the need for workers to leave the workspace or doff the mask in order to communicate. Made from soft: flexible silicone: the RU8500 provides workers with a comfortable fit for hours of use while the dual sealing flange provides an excellent facepiece seal. The RU8500 also has the unique option of a diverter exhalation valve cover: which directs exhaled breath downward and is ideal for painting/coating/sealing.
- Optimum fit and comfort with adjustable woven straps
- Soft, flexible silicone enhances fit and improves durability
- Compatible with all North low profile design N-Series Filters and Cartridges to increase visibility
- Speech diaphragm offers better clarity for improved communications
- Wide contoured design fits a variety of facial types
- Easy to clean
- Latex Free
Manufacturer item number: RU85001. Select a size or color to see the exact item number. Case quantity: 12.
Item Numbers
Variant item numbers:
RU85001S – Small
RU85001M – Medium
RU85001L – Large
Sold by the dozen
The price shown is for one dozen; quantity 1 = 1 dozen.
North RU8500 Series questions
What cartridges fit the North RU8500 Series? The North N-Series cartridges and filters. The manufacturer's NIOSH approval labels list the RU8500 Series facepieces with: 75SCL, N75001L, N75002L, N75003L, N75004L, N750052L, 75SCP100L, 7581P100L, 7583P100L, 7584P100L, 75852P100L, 7586P100L, 7580P100, 75FFP100, 75FFP100NL, 7506N95, 7506R95.
What sizes does the RU8500 Series come in? S, M, L: RU85001S, RU85001M, RU85001L.
What is the assigned protection factor of a half mask? OSHA Table 1 assigns an APF of 10 to an air-purifying half mask, 50 in continuous-flow supplied-air mode.
What is the part number for the organic vapor cartridge for the 7700 North half mask? The part number is N75001L This is an N-series cartridge, so it will fit all the North series respirators. (North support article 000001190.)
What is the part number for the Quantitative fit test adatper (QNFT) for the North RU6500, RU8800, RU8500, 5400, 7600, 5500, 7700, 7800 series respirators? And what is the part# for the P100 filter that will be needed also to perform a Quantitative fit test? All the North half mask and full face respirators can be fit tested. The part number for the Quanititive Fit Test (QNFT) Adapter for the North RU6500, 5400, 7600, 5500, 7700, 7800 and the HM500 series is part# 770021. The filter you will have to use to perform the fit test is part number 7580P100. (North support article 000005675.)
How to configure an air supply system with a 7600 series mask? A Supplied Air system includes the face piece (can be a hood or a full face), the breathing tube, the couplers, the hose and an air source. The following system is NIOSH approved with 7600, 5400, RU6500 full face pieces and with 7700, RU8500 and 5500 half masks - The breathing tube is part number CF2007. - The hose can be a 3/8" or a 1/2" (most people use the 3/8" but this can change depending on the pressure… (North support article 000028352.)
Guides: half mask vs full facepiece · assigned protection factors · what OSHA requires for fit testing · cleaning and storing respirators · North cartridge and filter colors and codes · cartridge change schedules · P100 vs N95 vs R95 · all North and Draeger respirators by model and hazard.
