Actually WD-40 is a Water Dispersant, and took 40 recepies before they got it right; WD-40 is useless as a lubricant. There are a whole lot of good lubricants out there. The best ones are dry film lubricants for your applications on seats and such. Won't smell, and won't pick-up dust, lint, and dirt, and won't mar your pant legs.
Graphite in spray cans,( black in color) Teflon in spray cans ( colorless) are excellent, and widely used.
Cheers,