The Honeywell North Defender Multi-Gas Vapor Cartridge (Part Number 75SCL) is an advanced, broad-spectrum chemical filtration cartridge engineered to deliver dependable respiratory protection across complex, multi-contaminant aerospace manufacturing, aircraft painting, depainting, and hazardous defense MRO operations. Packed with high-grade treated sorbent carbon, the 75SCL cartridge provides comprehensive protection against Organic Vapors, Ammonia, Methylamine, Chlorine, Hydrogen Chloride, Sulfur Dioxide, Chlorine Dioxide, Hydrogen Fluoride, and Formaldehyde. Designed with Honeywell North’s signature low-profile curved geometry and secure N-Series threaded mount, the 75SCL ensures an unobstructed field of vision and balanced weight distribution on half-mask and full-facepiece air-purifying respirators.

Technical Specifications & Material Properties

• Manufacturer / Brand: Honeywell / North® Safety Products
• Product Line: Defender™ Multi-Purpose Chemical Cartridges
• Part Number: 75SCL
• Cartridge Classification: Multi-Gas / Vapor (Organic Vapors, Acid Gases, Ammonia, Methylamine, Formaldehyde)
• Target Contaminants:
  • Organic Vapors (Solvents, thinners, MEK, toluene, xylene)
  • Acid Gases (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Chlorine Dioxide, Hydrogen Fluoride, Hydrogen Sulfide - escape only)
  • Ammonia and Methylamine
  • Formaldehyde
• Connection Mechanism: Honeywell North N-Series threaded interface for positive-seal locking
• Respirator Compatibility: Direct fit for Honeywell North 5500 Series half masks, 7700 Series half masks, 5400 Series full facepieces, 7600 Series full facepieces, and RU6500 Series facepieces
• Optional Particulate Stacking: Can be paired with N95 or P100 pre-filters (using the North 7580P100 adapter/covers or snap-on retainers) for combination dust/mist/fume environments
• Packaging Configuration: 2 cartridges per pack (1 matched pair)
• Housing Material: Impact-resistant, chemical-grade molded polystyrene

Approved Specifications & Industrial Standards:

The Honeywell North 75SCL Defender cartridge is tested and certified to stringent federal occupational safety mandates:

• NIOSH 42 CFR Part 84 Certified: Approved under TC-23C testing criteria for Multi-Gas and Multi-Vapor air-purifying respiratory protection.
• OSHA Chemical Hazard Compliance: Meets OSHA standards for air-purifying protection against regulated airborne chemicals, including Formaldehyde (29 CFR 1910.1048).
• Broad-Spectrum Defense Standard: Simplifies inventory management across flight-line hangars and paint booths by covering multiple gas hazards in a single cartridge.

Key Features & Performance Benefits

• All-in-One Gas & Vapor Defense: Eliminates the need to switch cartridges between solvent wiping, chemical stripping, acid descaling, and resin curing operations.
• Curved Low-Profile Geometry: Sweeps back toward the face to keep cartridges out of the user's line of sight and preserve peripheral visibility.
• Balanced Weight Distribution: Keeps center of gravity closer to the user's neck, minimizing muscle fatigue during extended shifts in assembly jigs or aircraft fuel tanks.
• Secure Threaded N-Series Connection: Screws on smoothly without fragile tabs, ensuring an airtight seal that resists accidental detachment from mechanical bumps.

Typical Applications

• Aircraft Paint Application & Solvent Wiping: Protects technicians from solvent vapors during the application of epoxy primers, polyurethane topcoats, MEK, and acetone wipe-downs.
• Chemical Stripping & Surface Etching: Shields workers handling aggressive acid brighteners, chromate conversion coatings, and ammonia-based stripping compounds.
• Composite Manufacturing & Resin Curing: Captures volatile organic outgassing, formaldehyde, and amine hardener vapors generated during autoclave and resin-infusion processes.
• Hazardous Chemical Handling & Waste Transfer: Essential PPE for flight-line fuel tank venting, battery shop acid maintenance, and chemical waste transfer.

• 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.