28A Sandstrom Solid Film Lubricant - MIL-PRF-46147D / MIL-L-23398

Toxic Heavy Metal Free

Sandstrom 28A is a premium solid film lubricant designed to meet the rigorous demands of the aerospace industry.  Conforming to MIL-PRF-46147D and MIL-L-23398 specifications, 28A offers exceptional corrosion resistance, load-carrying capacity, and long-term performance. Sandstrom 28A is a versatile and reliable solid film lubricant that offers exceptional performance and protection for a wide range of aerospace applications. Its combination of corrosion resistance, load-carrying capacity, and ease of application make it an ideal choice for maintaining the integrity of aircraft components.

• Superior Corrosion Protection: Prevents corrosion, galling, seizing, and fretting, ensuring the longevity of components.   
  
• Excellent Load-Carrying Capacity: Provides exceptional lubrication under extreme loads and pressures.   
  
• Wide Operating Temperature Range: Performs reliably from -320°F to +300°F.   
  
• Chemical Resistance: Resists a wide range of chemicals, solvents, and environmental factors.
  
• Easy Application: Can be applied by spraying, brushing, or using a marker.   
  
• Environmentally Friendly: Free of toxic heavy metals and harmful solvents.   

• Aircraft Components: Lubricates and protects a wide range of aircraft components, including bearings, gears, shafts, and fasteners.
  
• Metal-to-Metal Contact Areas: Prevents wear and galling in areas subject to friction and contact.   
  
• Corrosion Prevention: Protects metal surfaces from corrosion in harsh environments.

Specifications

• Department of Defense    MIL-PRF-46147D Type I Form 2
  
• Department of Defense    MIL-L-23398D Type II
  
• Department of Defense    MIL-STD-171F section 30.8
  
• General Dynamics    172A1702
  
• General Dynamics    5544161 rev F
  
• Andrew Communication Systems    59992031
  
• Westinghouse    53701TL
  
• GE/Lockheed    77A100859
  
• GE    77A107393
  
• Hamilton Sundstrand    MS34.52-02 Rev T
  
• Naval Sea Systems Command    NAV Sea 5544161
  
• McDonnell Douglas    HMS 4-1078 Types I & VIII, XI
  
• Boeing    HMS4-1078 F Types I, VIII, XI
  
• Honeywell International, Inc.    EMS 52402 Y Type XV
  
• Boeing    HMS4-1078QPL B Types I, VIII & XI
  
• SAE    AS1701F Class II
  
• Picatinny Arsenal    11832286

• 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.