DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail — Professional Grade Dry Film Lubricant

The DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail is a high-performance dry film lubricant manufactured by DuPont / MOLYKOTE and identified by part number 4110038. Engineered for aerospace MRO, defense maintenance, and industrial lubrication applications, this product molybdenum disulfide dry film provides long-lasting friction reduction and anti-wear protection on metal surfaces across a wide operating temperature range. It is designed for use on precision aerospace and industrial sliding surfaces, bearings, and mechanisms requiring molybdenum disulfide dry film lubrication in bulk quantities, and is compatible with metal and alloy surfaces in aerospace and industrial applications requiring MoS2 dry film lubrication.

This lubricant is engineered to meet the exacting performance demands of aerospace, defense, and industrial dry film lubrication applications. Available in 5 Gallon Pail format, the MOLYKOTE D-321 R delivers consistent, reliable dry film lubrication performance under the demanding temperature ranges, load conditions, and environmental exposure encountered in aerospace and defense service. Its formulation produces a stable, adherent lubricating film that minimizes friction and wear, prevents galling and corrosion, and extends the service life of coated components throughout the maintenance interval.

Selecting a specification-compliant dry film lubricant is critical in aerospace and defense maintenance to ensure that lubricated components perform reliably under the mechanical and environmental stresses of service. The MOLYKOTE D-321 R provides the OEM and specification-grade performance required by quality management systems, airworthiness regulations, and defense procurement standards. Using the correct lubricant ensures traceability, compliance, and reliable operation of the lubricated system.

Apply using appropriate dispensing or spray equipment to clean, dry surfaces. Ensure uniform film coverage and follow the manufacturer’s recommended application method and film thickness. Ensure all surfaces are thoroughly cleaned, degreased, and free of contamination before application to achieve maximum film adhesion and performance. Wear appropriate PPE including gloves and eye protection. Store in a cool, dry, well-ventilated location. Keep containers tightly sealed. Follow SDS guidance for safe storage of bulk chemical quantities. Refer to the full SDS and PDS for complete safety, handling, and disposal information.

Whether you are lubricating aerospace fasteners, defense weapon system components, precision mechanisms, or industrial sliding surfaces, the DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail provides the specification-grade dry film lubrication your program requires. Contact us for volume pricing, technical data sheets, certificates of conformance, and availability.

Product Specification

Technical Information

This lubricant is engineered to meet the exacting performance demands of aerospace, defense, and industrial dry film lubrication applications. This is a ready-to-use formulation. Store in a cool, dry, well-ventilated location. Keep containers tightly sealed. Follow SDS guidance for safe storage of bulk chemical quantities. Shelf life is typically 1–3 years in original sealed containers from date of manufacture. Full Safety Data Sheet (SDS) and Product Data Sheet (PDS) are available upon request.

Frequently Asked Questions

Q1: What surfaces and components is the DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail compatible with?
A: This dry film lubricant is compatible with metal and alloy surfaces in aerospace and industrial applications requiring MoS2 dry film lubrication. Always verify compatibility with specific materials and system requirements by consulting the product data sheet or contacting our technical team before applying to critical aerospace or defense components.

Q2: Does the MOLYKOTE D-321 R comply with aerospace or military specifications?
A: This product is engineered to meet the performance requirements of aerospace and industrial dry film lubrication applications. Contact us for full technical data sheets and application guidance.

Q3: How should I apply the DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail?
A: Apply using appropriate dispensing or spray equipment to clean, dry surfaces. Ensure uniform film coverage and follow the manufacturer’s recommended application method and film thickness. Always follow the manufacturer’s product data sheet for film thickness targets, application method requirements, surface preparation standards, and cure schedule specifications for optimal performance and specification compliance.

Q4: What are the storage and shelf life requirements for this lubricant?
A: Store in a cool, dry, well-ventilated location. Keep containers tightly sealed. Follow SDS guidance for safe storage of bulk chemical quantities. Shelf life is typically 1–3 years from date of manufacture in original sealed containers. Always verify with the container label or SDS for product-specific storage requirements and expiry dates before use.

Q5: Can I order the DUPONT™ MOLYKOTE® D-321 R Gray Dry Film Lubricant – 5 Gallon Pail in different sizes or bulk quantities?
A: Yes. While this listing covers the 5 Gallon Pail format, additional sizes, color variants, and bulk quantities may be available for this product. Contact us for volume pricing, lead times, availability, and to confirm which sizes and variants best support your aerospace MRO or defense maintenance program.