Universal seal designs incorporating tapered or conical sealing geometries, highly compliant seal materials, or mechanically adjustable compression systems can accommodate wider cable size ranges with acceptable performance, though generally at some compromise in optimal sealing effectiveness, service life, or operating friction compared to seals specifically optimized for narrow cabl... https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/