Cost analysis shows NBR seals at $2-5/unit for 2-inch, versus $10-15 for HNBR, with ROI via 2x life extension. Brass backups add $3 but prevent $10k failures. Bulk buys reduce 20% via suppliers like Big Iron. Lifecycle TCO for fracking: $500/well for premium seals vs. $2,000 for generics. Operators like Exxon prioritize HNBR for 15% savings in 5-year fleets. https://globalsealstech.com/product/hammer-union-seal-2/