The Honeywell North® RU8500 Series Half Mask Respirator is an advanced, premium reusable half-mask engineered for demanding industrial, aerospace MRO, chemical processing, and high-noise shop environments. Molded from 100% royal blue medical-grade silicone, the RU8500 offers exceptional face-sealing flexibility, cold-weather pliability, and long-term durability without causing skin irritation or pressure points. What sets the RU8500 apart is its integrated mechanical speech diaphragm, which delivers crisp, distortion-free voice transmission without requiring the wearer to compromise the facepiece seal. Equipped with an industrial exhalation valve cover directed downward to prevent lens fogging and protect the exhalation assembly from chemical spatter, the RU8500 features dual N-Series threaded connectors compatible with all Honeywell North® cartridges and filters.

Technical Specifications & Cross-References

• Manufacturer: Honeywell Safety Products / North®
• Product Line: North® RU8500 Series Reusable Half Masks
• Facepiece Material: 100% Medical-Grade Silicone (Latex-Free, Royal Blue)
• Communication Feature: Integrated Mechanical Speech Diaphragm
• Exhalation Cover: Industrial Downward-Directed Exhalation Valve Deflector
• Cartridge Connection Type: Dual N-Series Thread-On Connectors
• Harness Type: Dual-Cradle Suspension Harness with Heavy-Duty Woven Straps
• Available Sizes: Small (RU85001S), Medium (RU85001M), Large (RU85001L)
• System Versatility: Convertible to PAPR (Powered Air-Purifying Respirator) and Continuous Flow Supplied Air systems

Approved Specifications & Regulatory Conformance:

The Honeywell North RU8500 Series complies with strict occupational safety and health standards:

• NIOSH 42 CFR 84 Approval: Fully certified under NIOSH guidelines when paired with approved Honeywell North N-Series cartridges, particulate filters, and combination elements.
• OSHA Assigned Protection Factor (APF): APF = 10 when properly fit-tested and maintained under OSHA 1910.134 protocols.
• ANSI & CSA Compliance: Meets ANSI Z88.2 requirements for respiratory protection and CSA Z94.4 criteria.

Key Features & Performance Benefits

• Integrated Speech Diaphragm: Ensures clear, intelligible verbal communication across noisy work zones, improving safety and team coordination without breaking the face seal.
• 100% Royal Blue Medical-Grade Silicone: Conforms smoothly to diverse facial structures, maintaining a seal that resists cracking, hardening, or causing allergic skin reactions during long shifts.
• Industrial Downward Exhalation Cover: Directs warm exhaled air and moisture downward away from safety glasses and face shields, preventing fogging and shielding the exhalation valve from liquid splash.
• Dual-Cradle Head Strap Assembly: Evenly distributes mask weight across the crown of the head to eliminate facial pressure hotspots.
• Threaded Dual N-Series Connectors: Direct screw-on mechanism locks cartridges tightly in place to prevent accidental detachment in tight spaces.

Typical Applications

• Aerospace & Industrial Spray Painting: Protects workers against organic vapors and paint mist while allowing clear communication with team members during booth operations.
• Chemical Processing & Solvent Handling: Provides comfortable, non-irritating respiratory protection during chemical wiping, parts washing, and tank maintenance.
• Composite Maintenance & MRO Fabrication: Paired with P100 particulate filters to shield operators from fiberglass, carbon fiber dust, and toxic airborne particulates.

• All in-stock orders are processed within 1–2 business days (excluding weekends and holidays) after receiving your order confirmation email.
• Orders with a lead time will ship according to the estimated shipping time shown on the product page.
• If we experience a high volume of orders or if an item is backordered, processing times may be slightly delayed. We will notify you promptly via email.

• Returns and damage claims must be made within a maximum of 3 business days after receiving the product, with prior authorization from Aircraft Shop Supply (Return Material Authorization - RMA). Returns without prior notice or written authorization will not be accepted. We strongly recommend inspecting the product upon delivery; many products require special storage conditions for which we are not responsible once they arrive to the client's facility. Please review the product's SDS for proper storage and handling.
• For products with 3 to 6 months of remaining shelf life, claims must be made within the next 2 business days after receipt.
• Returns are not accepted for products with less than 3 months of remaining shelf life.
• Returns are not accepted for products purchased during a low Shelf Life promotion, items sold with discounts, or special orders that must be placed directly with the factory.
• The customer is responsible for the return shipping cost, except in cases where the return is due to an error on the part of Aircraft Shop Supply.
• Refunds will only be issued after the product has been inspected and no damage is found.
• A 25% Restocking Fee will be charged for returns of products in good condition that are either no longer needed or were ordered incorrectly.
• A 35% Restocking Fee will be charged for returns of products with one year or less of remaining shelf life.
• No Restocking Fee will be charged if Aircraft Shop Supply is responsible for incorrectly shipping a product, or if the order is damaged upon leaving the warehouse.
• Hazardous Materials & Dangerous Goods: These items are sold as final and are not eligible for return approval.

At Aircraft Shop Supply, we are committed to shipping the highest quality and freshest product possible. To ensure efficient stock rotation and meet aviation industry standards, our inventory management is governed by the following policy:

1. Scope of Application
All Sales Channels: This policy applies to all orders processed by Aircraft Shop Supply, including but not limited to: website purchases, direct email orders, formal Purchase Orders (POs), phone orders, and contract agreements.

2. Inventory Management (FIFO)
All products with an expiration date are managed and shipped on a strict "First In – First Out" (FIFO) basis.

3. Minimum Shipping Margin
Standard Guarantee: We will not ship any products with fewer than 30 days of use remaining (days before expiration), unless previously coordinated and agreed upon with the customer.

No Automatic Guarantees: Outside of this 30-day minimum margin, Aircraft Shop Supply does not make any automatic guarantee as to the specific length of time remaining on any shelf-life item for standard orders.

4. Special Customer Requirements
We understand that certain projects, maintenance schedules, or regulatory standards require strict specifications. If your order has specific shelf-life requirements, please proceed as follows:

How to Request: If you require a specific Date of Manufacture (DOM), Date of Expiration (DOE), or a specific minimum shelf-life percentage (%), you must clearly state this requirement:

In the Comments/Notes section when placing an online order.

Explicitly written on your Purchase Order (PO) or quote request email for offline orders.

Validation Process: Once your requirement is received:

We will ship your order if the available stock matches your specifications.

If we do not have the exact batch, we will contact you prior to shipping with the shelf-life percentage (%) or dates we have available for your acceptance.

5. Limitation of Liability and Validity of Information
To ensure transparency and manage expectations, the following terms and conditions apply:

Time-Limited Validity: Any information provided by our team regarding the remaining shelf-life percentage (%) is valid only at the exact time the inquiry is made. Due to high inventory turnover, availability is subject to change without prior notice.

Informational Purposes Only: Shelf-life data provided by Aircraft Shop Supply is strictly for informational purposes and reflects the availability at the moment of inquiry. It does not constitute a batch reservation or a product warranty.

Supply Chain Liability Exclusion: Aircraft Shop Supply is not responsible for the time elapsed or any product expiration that occurs after the order has been prepared and packed. This includes, but is not limited to: the time between order placement, carrier transit times, intermediary storage, customs delays, and final delivery to the end user. It is the customer's responsibility to account for these logistical lead times within their planning.