What Are Postal Rubber Bands? The Size #64 the Post Office Uses

When you think of the United States Postal Service, rubber bands might not be the first thing that comes to mind. However, postal rubber bands play a crucial role in mail sorting, bundling, and delivery operations across the country. The USPS relies on a specific type and size of rubber band to handle millions of pieces of mail daily: the size #64 postal rubber band.

What Makes Postal Rubber Bands Different?

Postal rubber bands aren't just any ordinary office supply. These specialized bands must meet strict federal specifications to handle the demanding requirements of mail processing facilities. The USPS uses size #64 rubber bands exclusively, which measure 3-1/2 inches by 1/4 inch when laid flat.

These bands are manufactured from natural crepe rubber, providing the durability and elasticity needed for high-volume mail operations. Each pound contains approximately 320 bands, making them cost-effective for large-scale postal operations while maintaining consistent performance standards.

Federal Specification A-A-131B Compliance

The postal rubber bands used by the USPS must meet or exceed Federal Specification A-A-131B, a rigorous standard that ensures quality, durability, and performance. This specification covers everything from tensile strength to elongation properties, guaranteeing that each band can withstand the mechanical stresses of automated mail sorting equipment.

Alliance Rubber Company, America's last remaining rubber band manufacturer, produces postal-grade size #64 bands that meet these exact federal specifications. These are the same bands supplied directly to the USPS for their daily operations.

Why Size #64 for Postal Applications?

The size #64 dimension (3-1/2" x 1/4") isn't arbitrary. This specific size provides the optimal balance of several key factors:

• Bundling Capacity: The 3-1/2 inch length accommodates standard mail bundle sizes used in postal facilities
• Strength: The 1/4 inch width provides sufficient strength to secure heavy mail bundles without breaking
• Stretch Recovery: Natural crepe rubber maintains elasticity through repeated use cycles
• Equipment Compatibility: The size works seamlessly with automated mail processing machinery

For reference on how size #64 compares to other rubber band dimensions, you can consult our comprehensive rubber band size chart.

Applications Beyond the Post Office

While postal rubber bands are specifically designed for USPS operations, their robust construction makes them valuable for various commercial and industrial applications:

Document Management

Law firms, accounting offices, and government agencies use postal rubber bands to secure large document bundles. The wide 1/4 inch band distributes pressure evenly, preventing damage to important papers while maintaining a secure hold.

Warehouse and Distribution

Distribution centers and fulfillment operations rely on postal rubber bands for bundling products, securing packaging materials, and organizing inventory. Their strength and reliability make them ideal for high-volume operations.

Manufacturing and Assembly

Manufacturing facilities use postal rubber bands to bundle components, secure work-in-progress items, and organize parts during assembly processes. The consistent quality ensures reliable performance in production environments.

Quality Standards and Manufacturing

Alliance Rubber Company manufactures postal rubber bands in Hot Springs, Arkansas, maintaining the same quality standards that have made them the trusted supplier to the USPS. Each band undergoes rigorous quality control testing to ensure it meets federal specifications.

The natural crepe rubber construction provides several advantages over synthetic alternatives:

• Superior elasticity: Natural rubber maintains its stretch properties longer than synthetic materials
• Temperature resistance: Performs consistently across a wide temperature range
• Chemical resistance: Resists degradation from common environmental factors
• Biodegradability: Natural rubber breaks down more readily than synthetic alternatives

Purchasing Options for Procurement Professionals

For organizations requiring authentic postal-grade rubber bands, Alliance offers postal rubber bands size #64 in two convenient package sizes:

5 lb Bag Option

The 5-pound bag contains approximately 1,600 bands and serves smaller operations or organizations wanting to test the product before committing to larger quantities. This option provides flexibility for facilities with moderate usage requirements.

25 lb Case Option

The 25-pound case delivers approximately 8,000 bands and offers better per-unit pricing for high-volume users. This bulk option is ideal for large mail processing facilities, distribution centers, and organizations with consistent, high-volume rubber band needs.

Cost Considerations and Value Proposition

While postal rubber bands may carry a premium compared to standard office rubber bands, their superior durability and performance characteristics often result in lower total cost of ownership. The federal specification compliance ensures consistent quality, reducing waste from broken or failed bands.

For procurement professionals evaluating rubber band options, consider these factors:

• Failure rate: Higher quality bands break less frequently, reducing operational disruptions
• Reusability: Superior elasticity allows for multiple use cycles
• Equipment compatibility: Consistent dimensions prevent jamming in automated equipment
• Inventory management: Reliable suppliers reduce stockout risks

Making the Right Choice

When your operation demands the same reliability and performance standards trusted by the United States Postal Service, postal rubber bands represent the gold standard. Whether you're managing a mailroom, operating a distribution facility, or organizing large-scale document processing, the size #64 postal rubber band delivers the consistency and durability your operation requires.

By choosing Alliance Rubber Company's postal-grade bands, you're investing in the same American-made quality that keeps the nation's mail moving efficiently every day. Contact our team to discuss your specific requirements and determine the optimal package size for your operation.