Overview Reviews Product Description Aids valve grinding and seating operations to remove burrs, surface defects, carbon, gum and corrosion. Can be used for lapping and grinding chromium. For both machine and hand grinding. Grease mixed formula. Permatex 2018 Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Permatex Valve Grinding Compound 115ml Can 58874 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *