The term "seam allowance" refers to the extra fabric that is added to the edges of a pattern piece to allow for sewing the pieces together. This extra fabric is necessary to create a strong and durable seam. The term "seam allowance" is used because it allows for the fabric to be folded over and stitched together, creating a clean and finished seam. It is an essential part of the construction process in sewing and ensures that the garment or project is properly assembled. **

A PU sealant, also known as a polyurethane sealant, is a type of adhesive sealant that is commonly used in construction and industrial applications. It is a versatile material that can be used for bonding, sealing, and filling gaps in various surfaces such as concrete, metal, wood, and plastic. PU sealants are known for their strong adhesion, flexibility, and resistance to weathering, making them ideal for outdoor applications where a durable seal is required. They come in different formulations to suit specific needs, such as high-temperature resistance, UV resistance, or paintability. **

A ceramic paint sealant is recommended for its durability and long-lasting protection. Ceramic sealants provide a strong barrier against environmental contaminants, UV rays, and other harmful elements that can damage the paint. Additionally, ceramic sealants offer a high level of gloss and shine, enhancing the overall appearance of the vehicle. Overall, ceramic paint sealants are a popular choice for those looking to protect and maintain the finish of their vehicle. **

An aquarium sealant is a type of adhesive specifically designed for use in aquariums to create a watertight seal. It is typically made of silicone and is safe for use in underwater environments. Aquarium sealant is used to bond and seal aquarium glass panels, as well as to attach decorations and other accessories to the aquarium walls. It is important to use a sealant that is specifically formulated for aquarium use to ensure the safety and well-being of the aquatic life inside the tank. **

A tire sealant is a liquid or gel substance that is designed to be injected into a tire to seal small punctures and leaks. It is typically used as a temporary fix for minor tire damage, allowing the driver to continue driving until a more permanent repair can be made. Tire sealants are commonly used in emergency situations or as a preventative measure to avoid flat tires. They work by coating the inside of the tire and forming a temporary seal around the puncture, preventing air from escaping. **

This is a silicone-based sealant. Silicone sealants are known for their flexibility, durability, and resistance to moisture, making them ideal for sealing joints and gaps in various surfaces such as glass, metal, and plastic. They are commonly used in construction, plumbing, and automotive applications due to their excellent adhesive properties and ability to withstand extreme temperatures. **

Climate Sealant 18 is a type of sealant specifically designed to provide a durable and weather-resistant seal for exterior building joints and gaps. It is formulated to withstand extreme weather conditions, including high temperatures, UV exposure, and moisture. Climate Sealant 18 is commonly used in construction and building maintenance to prevent air and water infiltration, as well as to maintain the energy efficiency and structural integrity of a building. **

A serged seam is a type of seam finish that is created using a serger machine. The serger trims the seam allowance and encases the raw edge of the fabric with multiple threads, creating a neat and professional-looking edge. This type of seam finish is commonly used in garment construction to prevent fraying and provide a clean, durable edge to the fabric. Serged seams are often used in knit fabrics and woven fabrics that tend to unravel easily. **