Overview Reviews Product Description 4100 series reusable couplings are used for 157 and 157 TeflonĀ® hose in high temperature applications such as air compressor connections. Pulsar Hydraulic Hose & Fittings 10th Edition Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Greenline 13/32 Pulsar 4100 Series Replacement Sleeve 4100-08 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *