Pac-Seal Pac-Seal products serve applications in some of the most diverse industries such as diesel, waste water, agricultural, pool and spa, and food and beverage markets in mid-to-high volume production. Pac-Seal also has an extensive range of high-quality, industry-standard elastomer bellows seals available to suit OEM and replacement seal customers. Pac-Seal's quality system is certified to ISO 9001 and ISO/TS 16949 standards.