How do you purge the charging hose of air?

The yellow hose is typically used for charging. The yellow hose goes to the container on one end of the hose. The other end is connected to the guage manifold. Slightly loosen the hose end connected to guage manifold and slightly open the container. You will hear gas escaping from hose end. Tighten hose and charging line is purged of air and only refrigerant is in that line

What kind of seals are in the hoses

Cheap Chinese ones I switched mine to Yellow Jacket immediately upon purchase no leaks very satisfied if you over tighten it you will bend the support or wall inside of the hose connection that supports the seal all you have to do is gently snug them up so that they just barely kiss and that kiss is enough to have a leak free connection under pressure or vacuum

how do i buy more seals for the hose ends?

You can buy a pack of them at a refrigeration supply store or perhaps order them from Amazon

Do I need to add PAG 46 oil after vacuuming and before recharging even if I hadn't changed any major parts like compressor or condenser?

No, you don't. Adding oil to your AC system will usually happen if you replace any major components in the system. After replacing the component, you must recharge the system to maintain the seal and prevent leaks. You will typically not need to add oil to your system. The only exception will be when performing system repairs, such as fixing a leak in the system.

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🔧 Elevate Your AC Game with Lichamp's Ultimate Gauge Set!

HEAVY DUTY BUILD - Crafted from durable brass and aluminum for longevity.
COMPREHENSIVE KIT - Includes all essential tools for AC diagnostics.
PROFESSIONAL QUALITY - Ideal for auto mechanics and HVAC professionals.
USER FRIENDLY DESIGN - Step-by-step manual for effortless operation.
PRECISION PERFORMANCE - Engineered for R134A, R410A, R404A, R22 refrigerants.

The Lichamp HVAC Gauges with Hoses is a multifunctional AC diagnostic manifold gauge set designed for professional automotive use. Compatible with various refrigerants, it features a durable construction, easy-to-read gauges, and a comprehensive kit that includes everything needed for efficient AC charging and diagnostics.

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Manufacturer	Lichamp
Brand	Lichamp
Product Dimensions	29.01 x 30 x 8.51 cm; 3.35 kg
Item model number	LCMGS134
Manufacturer Part Number	LCMGS134
Item Weight	3.35 Kilograms

Lichamp HVAC Gauges with Hoses, AC Manifold Gauge Set R410a R134a R12 R22 Refrigerant Gauges

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